Home / 20,220,345.80-30,330,518.70-10,142,649.80

Finding the Fourth Proportional to 20,220,345.80, 30,330,518.70 and 10,142,649.80

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Solution

The fourth proportional to 20,220,345.80, 30,330,518.70 and 10,142,649.80 is: 15,213,974.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220,345.80 : 30,330,518.70 = 10,142,649.80 : x
  2. Step 2: Convert to fraction form
    20,220,345.80/30,330,518.70 = 10,142,649.80/x
  3. Step 3: Cross multiply
    20,220,345.80x = 30,330,518.70 × 10,142,649.80
  4. Step 4: Simplify right side
    20,220,345.80x = 307,631,829,426,451.25
  5. Step 5: Solve for x
    x = 307,631,829,426,451.25/20,220,345.80
  6. Step 6: Final answer
    x = 15,213,974.70

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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.