Home / 13,640,089.60-20,468,007.60-5,121,287.20

Finding the Fourth Proportional to 13,640,089.60, 20,468,007.60 and 5,121,287.20

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Solution

The fourth proportional to 13,640,089.60, 20,468,007.60 and 5,121,287.20 is: 7,684,886.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640,089.60 : 20,468,007.60 = 5,121,287.20 : x
  2. Step 2: Convert to fraction form
    13,640,089.60/20,468,007.60 = 5,121,287.20/x
  3. Step 3: Cross multiply
    13,640,089.60x = 20,468,007.60 × 5,121,287.20
  4. Step 4: Simplify right side
    13,640,089.60x = 104,822,545,331,382.73
  5. Step 5: Solve for x
    x = 104,822,545,331,382.73/13,640,089.60
  6. Step 6: Final answer
    x = 7,684,886.86

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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.