Home / 28,340.38-42,479.40-11,691.32

Finding the Fourth Proportional to 28,340.38, 42,479.40 and 11,691.32

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Solution

The fourth proportional to 28,340.38, 42,479.40 and 11,691.32 is: 17,524.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340.38 : 42,479.40 = 11,691.32 : x
  2. Step 2: Convert to fraction form
    28,340.38/42,479.40 = 11,691.32/x
  3. Step 3: Cross multiply
    28,340.38x = 42,479.40 × 11,691.32
  4. Step 4: Simplify right side
    28,340.38x = 496,640,258.81
  5. Step 5: Solve for x
    x = 496,640,258.81/28,340.38
  6. Step 6: Final answer
    x = 17,524.12

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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.