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Finding the Fourth Proportional to 18,151,687.80, 27,227,531.70 and 18,045,399.60

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Solution

The fourth proportional to 18,151,687.80, 27,227,531.70 and 18,045,399.60 is: 27,068,099.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,151,687.80 : 27,227,531.70 = 18,045,399.60 : x
  2. Step 2: Convert to fraction form
    18,151,687.80/27,227,531.70 = 18,045,399.60/x
  3. Step 3: Cross multiply
    18,151,687.80x = 27,227,531.70 × 18,045,399.60
  4. Step 4: Simplify right side
    18,151,687.80x = 491,331,689,648,167.38
  5. Step 5: Solve for x
    x = 491,331,689,648,167.38/18,151,687.80
  6. Step 6: Final answer
    x = 27,068,099.40

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1.5x scale

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.