Home / 15,732.09-21,710.43-8,658.90

Finding the Fourth Proportional to 15,732.09, 21,710.43 and 8,658.90

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Solution

The fourth proportional to 15,732.09, 21,710.43 and 8,658.90 is: 11,949.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,732.09 : 21,710.43 = 8,658.90 : x
  2. Step 2: Convert to fraction form
    15,732.09/21,710.43 = 8,658.90/x
  3. Step 3: Cross multiply
    15,732.09x = 21,710.43 × 8,658.90
  4. Step 4: Simplify right side
    15,732.09x = 187,988,442.33
  5. Step 5: Solve for x
    x = 187,988,442.33/15,732.09
  6. Step 6: Final answer
    x = 11,949.36

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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.