Home / 15,257.33-21,053.27-8,542.43

Finding the Fourth Proportional to 15,257.33, 21,053.27 and 8,542.43

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Solution

The fourth proportional to 15,257.33, 21,053.27 and 8,542.43 is: 11,787.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,257.33 : 21,053.27 = 8,542.43 : x
  2. Step 2: Convert to fraction form
    15,257.33/21,053.27 = 8,542.43/x
  3. Step 3: Cross multiply
    15,257.33x = 21,053.27 × 8,542.43
  4. Step 4: Simplify right side
    15,257.33x = 179,845,937.27
  5. Step 5: Solve for x
    x = 179,845,937.27/15,257.33
  6. Step 6: Final answer
    x = 11,787.51

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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.