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Finding the Fourth Proportional to 18,085,902.70, 27,128,416.65 and 10,891,984.90

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Solution

The fourth proportional to 18,085,902.70, 27,128,416.65 and 10,891,984.90 is: 16,337,713.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085,902.70 : 27,128,416.65 = 10,891,984.90 : x
  2. Step 2: Convert to fraction form
    18,085,902.70/27,128,416.65 = 10,891,984.90/x
  3. Step 3: Cross multiply
    18,085,902.70x = 27,128,416.65 × 10,891,984.90
  4. Step 4: Simplify right side
    18,085,902.70x = 295,482,304,512,708.56
  5. Step 5: Solve for x
    x = 295,482,304,512,708.56/18,085,902.70
  6. Step 6: Final answer
    x = 16,337,713.93

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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.