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Finding the Fourth Proportional to 18,227.71, 27,341.61 and 13,142.98

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Solution

The fourth proportional to 18,227.71, 27,341.61 and 13,142.98 is: 19,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,227.71 : 27,341.61 = 13,142.98 : x
  2. Step 2: Convert to fraction form
    18,227.71/27,341.61 = 13,142.98/x
  3. Step 3: Cross multiply
    18,227.71x = 27,341.61 × 13,142.98
  4. Step 4: Simplify right side
    18,227.71x = 359,350,233.40
  5. Step 5: Solve for x
    x = 359,350,233.40/18,227.71
  6. Step 6: Final answer
    x = 19,714.50

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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.