Home / 28,414.09-42,652.29-11,785.78

Finding the Fourth Proportional to 28,414.09, 42,652.29 and 11,785.78

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Solution

The fourth proportional to 28,414.09, 42,652.29 and 11,785.78 is: 17,691.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,414.09 : 42,652.29 = 11,785.78 : x
  2. Step 2: Convert to fraction form
    28,414.09/42,652.29 = 11,785.78/x
  3. Step 3: Cross multiply
    28,414.09x = 42,652.29 × 11,785.78
  4. Step 4: Simplify right side
    28,414.09x = 502,690,506.44
  5. Step 5: Solve for x
    x = 502,690,506.44/28,414.09
  6. Step 6: Final answer
    x = 17,691.59

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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.