Home / 21,180.04-29,234.19-13,217.56

Finding the Fourth Proportional to 21,180.04, 29,234.19 and 13,217.56

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Solution

The fourth proportional to 21,180.04, 29,234.19 and 13,217.56 is: 18,243.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.04 : 29,234.19 = 13,217.56 : x
  2. Step 2: Convert to fraction form
    21,180.04/29,234.19 = 13,217.56/x
  3. Step 3: Cross multiply
    21,180.04x = 29,234.19 × 13,217.56
  4. Step 4: Simplify right side
    21,180.04x = 386,404,660.38
  5. Step 5: Solve for x
    x = 386,404,660.38/21,180.04
  6. Step 6: Final answer
    x = 18,243.81

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Double scale
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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.