Home / 11,729.28-16,186.92-6,423.84

Finding the Fourth Proportional to 11,729.28, 16,186.92 and 6,423.84

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Solution

The fourth proportional to 11,729.28, 16,186.92 and 6,423.84 is: 8,865.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.28 : 16,186.92 = 6,423.84 : x
  2. Step 2: Convert to fraction form
    11,729.28/16,186.92 = 6,423.84/x
  3. Step 3: Cross multiply
    11,729.28x = 16,186.92 × 6,423.84
  4. Step 4: Simplify right side
    11,729.28x = 103,982,184.17
  5. Step 5: Solve for x
    x = 103,982,184.17/11,729.28
  6. Step 6: Final answer
    x = 8,865.18

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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.