Home / 12,655.44-17,458.20-8,676.72

Finding the Fourth Proportional to 12,655.44, 17,458.20 and 8,676.72

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Solution

The fourth proportional to 12,655.44, 17,458.20 and 8,676.72 is: 11,969.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.44 : 17,458.20 = 8,676.72 : x
  2. Step 2: Convert to fraction form
    12,655.44/17,458.20 = 8,676.72/x
  3. Step 3: Cross multiply
    12,655.44x = 17,458.20 × 8,676.72
  4. Step 4: Simplify right side
    12,655.44x = 151,479,913.10
  5. Step 5: Solve for x
    x = 151,479,913.10/12,655.44
  6. Step 6: Final answer
    x = 11,969.55

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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.