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Finding the Fourth Proportional to 18,461.61, 27,691.70 and 6,149.61

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Solution

The fourth proportional to 18,461.61, 27,691.70 and 6,149.61 is: 9,224.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.61 : 27,691.70 = 6,149.61 : x
  2. Step 2: Convert to fraction form
    18,461.61/27,691.70 = 6,149.61/x
  3. Step 3: Cross multiply
    18,461.61x = 27,691.70 × 6,149.61
  4. Step 4: Simplify right side
    18,461.61x = 170,293,124.49
  5. Step 5: Solve for x
    x = 170,293,124.49/18,461.61
  6. Step 6: Final answer
    x = 9,224.18

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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.