Home / 15,523.32-21,422.28-8,449.75

Finding the Fourth Proportional to 15,523.32, 21,422.28 and 8,449.75

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Solution

The fourth proportional to 15,523.32, 21,422.28 and 8,449.75 is: 11,660.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.32 : 21,422.28 = 8,449.75 : x
  2. Step 2: Convert to fraction form
    15,523.32/21,422.28 = 8,449.75/x
  3. Step 3: Cross multiply
    15,523.32x = 21,422.28 × 8,449.75
  4. Step 4: Simplify right side
    15,523.32x = 181,012,910.43
  5. Step 5: Solve for x
    x = 181,012,910.43/15,523.32
  6. Step 6: Final answer
    x = 11,660.71

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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.