Home / 11,729.15-16,186.41-6,423.87

Finding the Fourth Proportional to 11,729.15, 16,186.41 and 6,423.87

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Solution

The fourth proportional to 11,729.15, 16,186.41 and 6,423.87 is: 8,865.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.15 : 16,186.41 = 6,423.87 : x
  2. Step 2: Convert to fraction form
    11,729.15/16,186.41 = 6,423.87/x
  3. Step 3: Cross multiply
    11,729.15x = 16,186.41 × 6,423.87
  4. Step 4: Simplify right side
    11,729.15x = 103,979,393.61
  5. Step 5: Solve for x
    x = 103,979,393.61/11,729.15
  6. Step 6: Final answer
    x = 8,865.04

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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.