Home / 21,540.52-29,719.06-13,045.85

Finding the Fourth Proportional to 21,540.52, 29,719.06 and 13,045.85

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Solution

The fourth proportional to 21,540.52, 29,719.06 and 13,045.85 is: 17,999.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.52 : 29,719.06 = 13,045.85 : x
  2. Step 2: Convert to fraction form
    21,540.52/29,719.06 = 13,045.85/x
  3. Step 3: Cross multiply
    21,540.52x = 29,719.06 × 13,045.85
  4. Step 4: Simplify right side
    21,540.52x = 387,710,398.90
  5. Step 5: Solve for x
    x = 387,710,398.90/21,540.52
  6. Step 6: Final answer
    x = 17,999.12

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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.