Home / 11,761.38-16,230.51-6,456.69

Finding the Fourth Proportional to 11,761.38, 16,230.51 and 6,456.69

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Solution

The fourth proportional to 11,761.38, 16,230.51 and 6,456.69 is: 8,910.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,761.38 : 16,230.51 = 6,456.69 : x
  2. Step 2: Convert to fraction form
    11,761.38/16,230.51 = 6,456.69/x
  3. Step 3: Cross multiply
    11,761.38x = 16,230.51 × 6,456.69
  4. Step 4: Simplify right side
    11,761.38x = 104,795,371.61
  5. Step 5: Solve for x
    x = 104,795,371.61/11,761.38
  6. Step 6: Final answer
    x = 8,910.13

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Find fourth proportional to 5,880.69, 8,115.26 and 3,228.35
Half scale
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Double scale
Find fourth proportional to 11,762.38, 16,231.89 and 6,457.69
Similar ratio
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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.