Home / 15,542.31-21,448.89-8,469.27

Finding the Fourth Proportional to 15,542.31, 21,448.89 and 8,469.27

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Solution

The fourth proportional to 15,542.31, 21,448.89 and 8,469.27 is: 11,687.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.31 : 21,448.89 = 8,469.27 : x
  2. Step 2: Convert to fraction form
    15,542.31/21,448.89 = 8,469.27/x
  3. Step 3: Cross multiply
    15,542.31x = 21,448.89 × 8,469.27
  4. Step 4: Simplify right side
    15,542.31x = 181,656,440.61
  5. Step 5: Solve for x
    x = 181,656,440.61/15,542.31
  6. Step 6: Final answer
    x = 11,687.87

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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.