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Finding the Fourth Proportional to 12,512.32, 17,251.32 and 8,028.16

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Solution

The fourth proportional to 12,512.32, 17,251.32 and 8,028.16 is: 11,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.32 : 17,251.32 = 8,028.16 : x
  2. Step 2: Convert to fraction form
    12,512.32/17,251.32 = 8,028.16/x
  3. Step 3: Cross multiply
    12,512.32x = 17,251.32 × 8,028.16
  4. Step 4: Simplify right side
    12,512.32x = 138,496,357.17
  5. Step 5: Solve for x
    x = 138,496,357.17/12,512.32
  6. Step 6: Final answer
    x = 11,068.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.