Home / 22,854.20-31,540.44-12,785.88

Finding the Fourth Proportional to 22,854.20, 31,540.44 and 12,785.88

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Solution

The fourth proportional to 22,854.20, 31,540.44 and 12,785.88 is: 17,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,854.20 : 31,540.44 = 12,785.88 : x
  2. Step 2: Convert to fraction form
    22,854.20/31,540.44 = 12,785.88/x
  3. Step 3: Cross multiply
    22,854.20x = 31,540.44 × 12,785.88
  4. Step 4: Simplify right side
    22,854.20x = 403,272,389.67
  5. Step 5: Solve for x
    x = 403,272,389.67/22,854.20
  6. Step 6: Final answer
    x = 17,645.44

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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.