Home / 20,270.01-27,939.12-13,553.16

Finding the Fourth Proportional to 20,270.01, 27,939.12 and 13,553.16

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Solution

The fourth proportional to 20,270.01, 27,939.12 and 13,553.16 is: 18,680.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.01 : 27,939.12 = 13,553.16 : x
  2. Step 2: Convert to fraction form
    20,270.01/27,939.12 = 13,553.16/x
  3. Step 3: Cross multiply
    20,270.01x = 27,939.12 × 13,553.16
  4. Step 4: Simplify right side
    20,270.01x = 378,663,363.62
  5. Step 5: Solve for x
    x = 378,663,363.62/20,270.01
  6. Step 6: Final answer
    x = 18,680.97

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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.