Home / 12,162.13-16,773.36-8,391.31

Finding the Fourth Proportional to 12,162.13, 16,773.36 and 8,391.31

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Solution

The fourth proportional to 12,162.13, 16,773.36 and 8,391.31 is: 11,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,162.13 : 16,773.36 = 8,391.31 : x
  2. Step 2: Convert to fraction form
    12,162.13/16,773.36 = 8,391.31/x
  3. Step 3: Cross multiply
    12,162.13x = 16,773.36 × 8,391.31
  4. Step 4: Simplify right side
    12,162.13x = 140,750,463.50
  5. Step 5: Solve for x
    x = 140,750,463.50/12,162.13
  6. Step 6: Final answer
    x = 11,572.85

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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.