Home / 31,393.20-47,046.60-20,833.20

Finding the Fourth Proportional to 31,393.20, 47,046.60 and 20,833.20

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Solution

The fourth proportional to 31,393.20, 47,046.60 and 20,833.20 is: 31,221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,393.20 : 47,046.60 = 20,833.20 : x
  2. Step 2: Convert to fraction form
    31,393.20/47,046.60 = 20,833.20/x
  3. Step 3: Cross multiply
    31,393.20x = 47,046.60 × 20,833.20
  4. Step 4: Simplify right side
    31,393.20x = 980,131,227.12
  5. Step 5: Solve for x
    x = 980,131,227.12/31,393.20
  6. Step 6: Final answer
    x = 31,221.13

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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.