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Finding the Fourth Proportional to 18,687,582.40, 28,026,124.80 and 5,912,003.20

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Solution

The fourth proportional to 18,687,582.40, 28,026,124.80 and 5,912,003.20 is: 8,866,344.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,582.40 : 28,026,124.80 = 5,912,003.20 : x
  2. Step 2: Convert to fraction form
    18,687,582.40/28,026,124.80 = 5,912,003.20/x
  3. Step 3: Cross multiply
    18,687,582.40x = 28,026,124.80 × 5,912,003.20
  4. Step 4: Simplify right side
    18,687,582.40x = 165,690,539,501,199.38
  5. Step 5: Solve for x
    x = 165,690,539,501,199.38/18,687,582.40
  6. Step 6: Final answer
    x = 8,866,344.29

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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.