Home / 18,730,136.80-28,063,712.40-15,517,871.20

Finding the Fourth Proportional to 18,730,136.80, 28,063,712.40 and 15,517,871.20

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Solution

The fourth proportional to 18,730,136.80, 28,063,712.40 and 15,517,871.20 is: 23,250,715.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730,136.80 : 28,063,712.40 = 15,517,871.20 : x
  2. Step 2: Convert to fraction form
    18,730,136.80/28,063,712.40 = 15,517,871.20/x
  3. Step 3: Cross multiply
    18,730,136.80x = 28,063,712.40 × 15,517,871.20
  4. Step 4: Simplify right side
    18,730,136.80x = 435,489,074,417,042.81
  5. Step 5: Solve for x
    x = 435,489,074,417,042.81/18,730,136.80
  6. Step 6: Final answer
    x = 23,250,715.09

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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.