Home / 18,861,172.20-28,268,893.20-13,387,657.95

Finding the Fourth Proportional to 18,861,172.20, 28,268,893.20 and 13,387,657.95

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Solution

The fourth proportional to 18,861,172.20, 28,268,893.20 and 13,387,657.95 is: 20,065,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861,172.20 : 28,268,893.20 = 13,387,657.95 : x
  2. Step 2: Convert to fraction form
    18,861,172.20/28,268,893.20 = 13,387,657.95/x
  3. Step 3: Cross multiply
    18,861,172.20x = 28,268,893.20 × 13,387,657.95
  4. Step 4: Simplify right side
    18,861,172.20x = 378,454,272,786,680.94
  5. Step 5: Solve for x
    x = 378,454,272,786,680.94/18,861,172.20
  6. Step 6: Final answer
    x = 20,065,257.28

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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.