Home / 19,121.40-28,686.15-5,793.30

Finding the Fourth Proportional to 19,121.40, 28,686.15 and 5,793.30

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Solution

The fourth proportional to 19,121.40, 28,686.15 and 5,793.30 is: 8,691.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.40 : 28,686.15 = 5,793.30 : x
  2. Step 2: Convert to fraction form
    19,121.40/28,686.15 = 5,793.30/x
  3. Step 3: Cross multiply
    19,121.40x = 28,686.15 × 5,793.30
  4. Step 4: Simplify right side
    19,121.40x = 166,187,472.80
  5. Step 5: Solve for x
    x = 166,187,472.80/19,121.40
  6. Step 6: Final answer
    x = 8,691.18

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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.