Home / 21,534.27-29,708.85-15,882.58

Finding the Fourth Proportional to 21,534.27, 29,708.85 and 15,882.58

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Solution

The fourth proportional to 21,534.27, 29,708.85 and 15,882.58 is: 21,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,534.27 : 29,708.85 = 15,882.58 : x
  2. Step 2: Convert to fraction form
    21,534.27/29,708.85 = 15,882.58/x
  3. Step 3: Cross multiply
    21,534.27x = 29,708.85 × 15,882.58
  4. Step 4: Simplify right side
    21,534.27x = 471,853,186.83
  5. Step 5: Solve for x
    x = 471,853,186.83/21,534.27
  6. Step 6: Final answer
    x = 21,911.73

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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.