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Finding the Fourth Proportional to 18,613.13, 27,938.16 and 15,144.03

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Solution

The fourth proportional to 18,613.13, 27,938.16 and 15,144.03 is: 22,731.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.13 : 27,938.16 = 15,144.03 : x
  2. Step 2: Convert to fraction form
    18,613.13/27,938.16 = 15,144.03/x
  3. Step 3: Cross multiply
    18,613.13x = 27,938.16 × 15,144.03
  4. Step 4: Simplify right side
    18,613.13x = 423,096,333.18
  5. Step 5: Solve for x
    x = 423,096,333.18/18,613.13
  6. Step 6: Final answer
    x = 22,731.07

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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.