Home / 18,708,981.30-28,073,969.55-7,924,446.90

Finding the Fourth Proportional to 18,708,981.30, 28,073,969.55 and 7,924,446.90

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Solution

The fourth proportional to 18,708,981.30, 28,073,969.55 and 7,924,446.90 is: 11,891,116.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708,981.30 : 28,073,969.55 = 7,924,446.90 : x
  2. Step 2: Convert to fraction form
    18,708,981.30/28,073,969.55 = 7,924,446.90/x
  3. Step 3: Cross multiply
    18,708,981.30x = 28,073,969.55 × 7,924,446.90
  4. Step 4: Simplify right side
    18,708,981.30x = 222,470,680,971,191.91
  5. Step 5: Solve for x
    x = 222,470,680,971,191.91/18,708,981.30
  6. Step 6: Final answer
    x = 11,891,116.75

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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.