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Finding the Fourth Proportional to 18,502.39, 25,511.07 and 12,842.02

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Solution

The fourth proportional to 18,502.39, 25,511.07 and 12,842.02 is: 17,706.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,502.39 : 25,511.07 = 12,842.02 : x
  2. Step 2: Convert to fraction form
    18,502.39/25,511.07 = 12,842.02/x
  3. Step 3: Cross multiply
    18,502.39x = 25,511.07 × 12,842.02
  4. Step 4: Simplify right side
    18,502.39x = 327,613,671.16
  5. Step 5: Solve for x
    x = 327,613,671.16/18,502.39
  6. Step 6: Final answer
    x = 17,706.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.