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Finding the Fourth Proportional to 18,189,687.70, 27,284,531.55 and 15,745,059.10

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Solution

The fourth proportional to 18,189,687.70, 27,284,531.55 and 15,745,059.10 is: 23,617,588.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189,687.70 : 27,284,531.55 = 15,745,059.10 : x
  2. Step 2: Convert to fraction form
    18,189,687.70/27,284,531.55 = 15,745,059.10/x
  3. Step 3: Cross multiply
    18,189,687.70x = 27,284,531.55 × 15,745,059.10
  4. Step 4: Simplify right side
    18,189,687.70x = 429,596,561,770,564.62
  5. Step 5: Solve for x
    x = 429,596,561,770,564.62/18,189,687.70
  6. Step 6: Final answer
    x = 23,617,588.65

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Similar ratio
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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.