Home / 21,149.76-31,724.88-10,057.52

Finding the Fourth Proportional to 21,149.76, 31,724.88 and 10,057.52

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Solution

The fourth proportional to 21,149.76, 31,724.88 and 10,057.52 is: 15,086.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.76 : 31,724.88 = 10,057.52 : x
  2. Step 2: Convert to fraction form
    21,149.76/31,724.88 = 10,057.52/x
  3. Step 3: Cross multiply
    21,149.76x = 31,724.88 × 10,057.52
  4. Step 4: Simplify right side
    21,149.76x = 319,073,615.10
  5. Step 5: Solve for x
    x = 319,073,615.10/21,149.76
  6. Step 6: Final answer
    x = 15,086.39

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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.