Home / 20,155,666,280.80-30,233,499,421.20-15,947,220,431.20

Finding the Fourth Proportional to 20,155,666,280.80, 30,233,499,421.20 and 15,947,220,431.20

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Solution

The fourth proportional to 20,155,666,280.80, 30,233,499,421.20 and 15,947,220,431.20 is: 23,920,830,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155,666,280.80 : 30,233,499,421.20 = 15,947,220,431.20 : x
  2. Step 2: Convert to fraction form
    20,155,666,280.80/30,233,499,421.20 = 15,947,220,431.20/x
  3. Step 3: Cross multiply
    20,155,666,280.80x = 30,233,499,421.20 × 15,947,220,431.20
  4. Step 4: Simplify right side
    20,155,666,280.80x = 482,140,279,676,434,055,168
  5. Step 5: Solve for x
    x = 482,140,279,676,434,055,168/20,155,666,280.80
  6. Step 6: Final answer
    x = 23,920,830,646.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.