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Finding the Fourth Proportional to 18,209,901.30, 27,314,851.95 and 18,103,613.10

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Solution

The fourth proportional to 18,209,901.30, 27,314,851.95 and 18,103,613.10 is: 27,155,419.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,209,901.30 : 27,314,851.95 = 18,103,613.10 : x
  2. Step 2: Convert to fraction form
    18,209,901.30/27,314,851.95 = 18,103,613.10/x
  3. Step 3: Cross multiply
    18,209,901.30x = 27,314,851.95 × 18,103,613.10
  4. Step 4: Simplify right side
    18,209,901.30x = 494,497,511,586,580.56
  5. Step 5: Solve for x
    x = 494,497,511,586,580.56/18,209,901.30
  6. Step 6: Final answer
    x = 27,155,419.65

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Double scale
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Similar ratio
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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.