Home / 12,016.40-17,992.20-8,711.60

Finding the Fourth Proportional to 12,016.40, 17,992.20 and 8,711.60

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Solution

The fourth proportional to 12,016.40, 17,992.20 and 8,711.60 is: 13,043.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,016.40 : 17,992.20 = 8,711.60 : x
  2. Step 2: Convert to fraction form
    12,016.40/17,992.20 = 8,711.60/x
  3. Step 3: Cross multiply
    12,016.40x = 17,992.20 × 8,711.60
  4. Step 4: Simplify right side
    12,016.40x = 156,740,849.52
  5. Step 5: Solve for x
    x = 156,740,849.52/12,016.40
  6. Step 6: Final answer
    x = 13,043.91

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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.