Home / 20,981.43-31,442.48-11,625.73

Finding the Fourth Proportional to 20,981.43, 31,442.48 and 11,625.73

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Solution

The fourth proportional to 20,981.43, 31,442.48 and 11,625.73 is: 17,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.43 : 31,442.48 = 11,625.73 : x
  2. Step 2: Convert to fraction form
    20,981.43/31,442.48 = 11,625.73/x
  3. Step 3: Cross multiply
    20,981.43x = 31,442.48 × 11,625.73
  4. Step 4: Simplify right side
    20,981.43x = 365,541,689.87
  5. Step 5: Solve for x
    x = 365,541,689.87/20,981.43
  6. Step 6: Final answer
    x = 17,422.15

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1.5x scale

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.