Home / 12,475.20-17,182.08-11,540.64

Finding the Fourth Proportional to 12,475.20, 17,182.08 and 11,540.64

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Solution

The fourth proportional to 12,475.20, 17,182.08 and 11,540.64 is: 15,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.20 : 17,182.08 = 11,540.64 : x
  2. Step 2: Convert to fraction form
    12,475.20/17,182.08 = 11,540.64/x
  3. Step 3: Cross multiply
    12,475.20x = 17,182.08 × 11,540.64
  4. Step 4: Simplify right side
    12,475.20x = 198,292,199.73
  5. Step 5: Solve for x
    x = 198,292,199.73/12,475.20
  6. Step 6: Final answer
    x = 15,894.91

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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.