Home / 15,422.76-21,281.11-8,708.24

Finding the Fourth Proportional to 15,422.76, 21,281.11 and 8,708.24

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Solution

The fourth proportional to 15,422.76, 21,281.11 and 8,708.24 is: 12,016.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.76 : 21,281.11 = 8,708.24 : x
  2. Step 2: Convert to fraction form
    15,422.76/21,281.11 = 8,708.24/x
  3. Step 3: Cross multiply
    15,422.76x = 21,281.11 × 8,708.24
  4. Step 4: Simplify right side
    15,422.76x = 185,321,044.78
  5. Step 5: Solve for x
    x = 185,321,044.78/15,422.76
  6. Step 6: Final answer
    x = 12,016.08

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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.