Home / 21,306.47-29,456.07-15,992.06

Finding the Fourth Proportional to 21,306.47, 29,456.07 and 15,992.06

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Solution

The fourth proportional to 21,306.47, 29,456.07 and 15,992.06 is: 22,108.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.47 : 29,456.07 = 15,992.06 : x
  2. Step 2: Convert to fraction form
    21,306.47/29,456.07 = 15,992.06/x
  3. Step 3: Cross multiply
    21,306.47x = 29,456.07 × 15,992.06
  4. Step 4: Simplify right side
    21,306.47x = 471,063,091.52
  5. Step 5: Solve for x
    x = 471,063,091.52/21,306.47
  6. Step 6: Final answer
    x = 22,108.93

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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.