Home / 12,480,800.40-18,721,200.60-10,213,318.80

Finding the Fourth Proportional to 12,480,800.40, 18,721,200.60 and 10,213,318.80

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Solution

The fourth proportional to 12,480,800.40, 18,721,200.60 and 10,213,318.80 is: 15,319,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480,800.40 : 18,721,200.60 = 10,213,318.80 : x
  2. Step 2: Convert to fraction form
    12,480,800.40/18,721,200.60 = 10,213,318.80/x
  3. Step 3: Cross multiply
    12,480,800.40x = 18,721,200.60 × 10,213,318.80
  4. Step 4: Simplify right side
    12,480,800.40x = 191,205,590,046,551.31
  5. Step 5: Solve for x
    x = 191,205,590,046,551.31/12,480,800.40
  6. Step 6: Final answer
    x = 15,319,978.20

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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.