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Finding the Fourth Proportional to 17,807,931.80, 26,711,897.70 and 15,894,744.20

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Solution

The fourth proportional to 17,807,931.80, 26,711,897.70 and 15,894,744.20 is: 23,842,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,807,931.80 : 26,711,897.70 = 15,894,744.20 : x
  2. Step 2: Convert to fraction form
    17,807,931.80/26,711,897.70 = 15,894,744.20/x
  3. Step 3: Cross multiply
    17,807,931.80x = 26,711,897.70 × 15,894,744.20
  4. Step 4: Simplify right side
    17,807,931.80x = 424,578,781,038,068.31
  5. Step 5: Solve for x
    x = 424,578,781,038,068.31/17,807,931.80
  6. Step 6: Final answer
    x = 23,842,116.30

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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.