Home / 15,732.09-21,710.43-8,658.56

Finding the Fourth Proportional to 15,732.09, 21,710.43 and 8,658.56

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Solution

The fourth proportional to 15,732.09, 21,710.43 and 8,658.56 is: 11,948.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,732.09 : 21,710.43 = 8,658.56 : x
  2. Step 2: Convert to fraction form
    15,732.09/21,710.43 = 8,658.56/x
  3. Step 3: Cross multiply
    15,732.09x = 21,710.43 × 8,658.56
  4. Step 4: Simplify right side
    15,732.09x = 187,981,115.06
  5. Step 5: Solve for x
    x = 187,981,115.06/15,732.09
  6. Step 6: Final answer
    x = 11,948.90

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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.