Home / 28,194.78-42,255.27-11,535.31

Finding the Fourth Proportional to 28,194.78, 42,255.27 and 11,535.31

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Solution

The fourth proportional to 28,194.78, 42,255.27 and 11,535.31 is: 17,287.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,194.78 : 42,255.27 = 11,535.31 : x
  2. Step 2: Convert to fraction form
    28,194.78/42,255.27 = 11,535.31/x
  3. Step 3: Cross multiply
    28,194.78x = 42,255.27 × 11,535.31
  4. Step 4: Simplify right side
    28,194.78x = 487,427,691.40
  5. Step 5: Solve for x
    x = 487,427,691.40/28,194.78
  6. Step 6: Final answer
    x = 17,287.87

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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.