Home / 11,729.05-16,186.09-6,423.88

Finding the Fourth Proportional to 11,729.05, 16,186.09 and 6,423.88

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Solution

The fourth proportional to 11,729.05, 16,186.09 and 6,423.88 is: 8,864.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.05 : 16,186.09 = 6,423.88 : x
  2. Step 2: Convert to fraction form
    11,729.05/16,186.09 = 6,423.88/x
  3. Step 3: Cross multiply
    11,729.05x = 16,186.09 × 6,423.88
  4. Step 4: Simplify right side
    11,729.05x = 103,977,386.78
  5. Step 5: Solve for x
    x = 103,977,386.78/11,729.05
  6. Step 6: Final answer
    x = 8,864.95

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Half scale
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Double scale
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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.