Home / 12,658.20-17,459.55-8,679.66

Finding the Fourth Proportional to 12,658.20, 17,459.55 and 8,679.66

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Solution

The fourth proportional to 12,658.20, 17,459.55 and 8,679.66 is: 11,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.20 : 17,459.55 = 8,679.66 : x
  2. Step 2: Convert to fraction form
    12,658.20/17,459.55 = 8,679.66/x
  3. Step 3: Cross multiply
    12,658.20x = 17,459.55 × 8,679.66
  4. Step 4: Simplify right side
    12,658.20x = 151,542,957.75
  5. Step 5: Solve for x
    x = 151,542,957.75/12,658.20
  6. Step 6: Final answer
    x = 11,971.92

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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.