Home / 31,939.06-47,868.90-20,255.62

Finding the Fourth Proportional to 31,939.06, 47,868.90 and 20,255.62

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Solution

The fourth proportional to 31,939.06, 47,868.90 and 20,255.62 is: 30,358.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,939.06 : 47,868.90 = 20,255.62 : x
  2. Step 2: Convert to fraction form
    31,939.06/47,868.90 = 20,255.62/x
  3. Step 3: Cross multiply
    31,939.06x = 47,868.90 × 20,255.62
  4. Step 4: Simplify right side
    31,939.06x = 969,614,248.22
  5. Step 5: Solve for x
    x = 969,614,248.22/31,939.06
  6. Step 6: Final answer
    x = 30,358.26

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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.