Home / 15,721.72-23,575.29-9,149.79

Finding the Fourth Proportional to 15,721.72, 23,575.29 and 9,149.79

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Solution

The fourth proportional to 15,721.72, 23,575.29 and 9,149.79 is: 13,720.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,721.72 : 23,575.29 = 9,149.79 : x
  2. Step 2: Convert to fraction form
    15,721.72/23,575.29 = 9,149.79/x
  3. Step 3: Cross multiply
    15,721.72x = 23,575.29 × 9,149.79
  4. Step 4: Simplify right side
    15,721.72x = 215,708,952.69
  5. Step 5: Solve for x
    x = 215,708,952.69/15,721.72
  6. Step 6: Final answer
    x = 13,720.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.