Home / 22,781.20-31,391.40-16,803.40

Finding the Fourth Proportional to 22,781.20, 31,391.40 and 16,803.40

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Solution

The fourth proportional to 22,781.20, 31,391.40 and 16,803.40 is: 23,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,781.20 : 31,391.40 = 16,803.40 : x
  2. Step 2: Convert to fraction form
    22,781.20/31,391.40 = 16,803.40/x
  3. Step 3: Cross multiply
    22,781.20x = 31,391.40 × 16,803.40
  4. Step 4: Simplify right side
    22,781.20x = 527,482,250.76
  5. Step 5: Solve for x
    x = 527,482,250.76/22,781.20
  6. Step 6: Final answer
    x = 23,154.28

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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.