Home / 22,689.25-31,311.18-13,257.88

Finding the Fourth Proportional to 22,689.25, 31,311.18 and 13,257.88

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Solution

The fourth proportional to 22,689.25, 31,311.18 and 13,257.88 is: 18,295.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,689.25 : 31,311.18 = 13,257.88 : x
  2. Step 2: Convert to fraction form
    22,689.25/31,311.18 = 13,257.88/x
  3. Step 3: Cross multiply
    22,689.25x = 31,311.18 × 13,257.88
  4. Step 4: Simplify right side
    22,689.25x = 415,119,867.10
  5. Step 5: Solve for x
    x = 415,119,867.10/22,689.25
  6. Step 6: Final answer
    x = 18,295.88

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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.