Home / 11,685.81-16,126.65-6,380.85

Finding the Fourth Proportional to 11,685.81, 16,126.65 and 6,380.85

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Solution

The fourth proportional to 11,685.81, 16,126.65 and 6,380.85 is: 8,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.81 : 16,126.65 = 6,380.85 : x
  2. Step 2: Convert to fraction form
    11,685.81/16,126.65 = 6,380.85/x
  3. Step 3: Cross multiply
    11,685.81x = 16,126.65 × 6,380.85
  4. Step 4: Simplify right side
    11,685.81x = 102,901,734.65
  5. Step 5: Solve for x
    x = 102,901,734.65/11,685.81
  6. Step 6: Final answer
    x = 8,805.70

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Half scale
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Double scale
Find fourth proportional to 11,686.81, 16,128.03 and 6,381.85
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.