Home / 11,685.88-16,126.28-6,380.73

Finding the Fourth Proportional to 11,685.88, 16,126.28 and 6,380.73

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Solution

The fourth proportional to 11,685.88, 16,126.28 and 6,380.73 is: 8,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.88 : 16,126.28 = 6,380.73 : x
  2. Step 2: Convert to fraction form
    11,685.88/16,126.28 = 6,380.73/x
  3. Step 3: Cross multiply
    11,685.88x = 16,126.28 × 6,380.73
  4. Step 4: Simplify right side
    11,685.88x = 102,897,438.58
  5. Step 5: Solve for x
    x = 102,897,438.58/11,685.88
  6. Step 6: Final answer
    x = 8,805.28

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Half scale
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Double scale
Find fourth proportional to 11,686.88, 16,127.66 and 6,381.73
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.