Home / 20,549.34-28,358.19-11,117.93

Finding the Fourth Proportional to 20,549.34, 28,358.19 and 11,117.93

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Solution

The fourth proportional to 20,549.34, 28,358.19 and 11,117.93 is: 15,342.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.34 : 28,358.19 = 11,117.93 : x
  2. Step 2: Convert to fraction form
    20,549.34/28,358.19 = 11,117.93/x
  3. Step 3: Cross multiply
    20,549.34x = 28,358.19 × 11,117.93
  4. Step 4: Simplify right side
    20,549.34x = 315,284,229.56
  5. Step 5: Solve for x
    x = 315,284,229.56/20,549.34
  6. Step 6: Final answer
    x = 15,342.79

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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.