Home / 20,549.43-28,358.24-11,117.97

Finding the Fourth Proportional to 20,549.43, 28,358.24 and 11,117.97

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Solution

The fourth proportional to 20,549.43, 28,358.24 and 11,117.97 is: 15,342.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.43 : 28,358.24 = 11,117.97 : x
  2. Step 2: Convert to fraction form
    20,549.43/28,358.24 = 11,117.97/x
  3. Step 3: Cross multiply
    20,549.43x = 28,358.24 × 11,117.97
  4. Step 4: Simplify right side
    20,549.43x = 315,286,005.98
  5. Step 5: Solve for x
    x = 315,286,005.98/20,549.43
  6. Step 6: Final answer
    x = 15,342.81

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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.