Home / 21,101.75-31,663.62-15,306.20

Finding the Fourth Proportional to 21,101.75, 31,663.62 and 15,306.20

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Solution

The fourth proportional to 21,101.75, 31,663.62 and 15,306.20 is: 22,967.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.75 : 31,663.62 = 15,306.20 : x
  2. Step 2: Convert to fraction form
    21,101.75/31,663.62 = 15,306.20/x
  3. Step 3: Cross multiply
    21,101.75x = 31,663.62 × 15,306.20
  4. Step 4: Simplify right side
    21,101.75x = 484,649,542.13
  5. Step 5: Solve for x
    x = 484,649,542.13/21,101.75
  6. Step 6: Final answer
    x = 22,967.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.