Home / 20,939.23-31,414.95-8,452.87

Finding the Fourth Proportional to 20,939.23, 31,414.95 and 8,452.87

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Solution

The fourth proportional to 20,939.23, 31,414.95 and 8,452.87 is: 12,681.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.23 : 31,414.95 = 8,452.87 : x
  2. Step 2: Convert to fraction form
    20,939.23/31,414.95 = 8,452.87/x
  3. Step 3: Cross multiply
    20,939.23x = 31,414.95 × 8,452.87
  4. Step 4: Simplify right side
    20,939.23x = 265,546,488.41
  5. Step 5: Solve for x
    x = 265,546,488.41/20,939.23
  6. Step 6: Final answer
    x = 12,681.77

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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.