Home / 15,542.67-21,472.31-12,553.30

Finding the Fourth Proportional to 15,542.67, 21,472.31 and 12,553.30

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Solution

The fourth proportional to 15,542.67, 21,472.31 and 12,553.30 is: 17,342.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.67 : 21,472.31 = 12,553.30 : x
  2. Step 2: Convert to fraction form
    15,542.67/21,472.31 = 12,553.30/x
  3. Step 3: Cross multiply
    15,542.67x = 21,472.31 × 12,553.30
  4. Step 4: Simplify right side
    15,542.67x = 269,548,349.12
  5. Step 5: Solve for x
    x = 269,548,349.12/15,542.67
  6. Step 6: Final answer
    x = 17,342.47

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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.