Home / 20,862.92-31,108.30-18,544.70

Finding the Fourth Proportional to 20,862.92, 31,108.30 and 18,544.70

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Solution

The fourth proportional to 20,862.92, 31,108.30 and 18,544.70 is: 27,651.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.92 : 31,108.30 = 18,544.70 : x
  2. Step 2: Convert to fraction form
    20,862.92/31,108.30 = 18,544.70/x
  3. Step 3: Cross multiply
    20,862.92x = 31,108.30 × 18,544.70
  4. Step 4: Simplify right side
    20,862.92x = 576,894,122.42
  5. Step 5: Solve for x
    x = 576,894,122.42/20,862.92
  6. Step 6: Final answer
    x = 27,651.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.