Home / 11,729.19-16,186.50-6,423.67

Finding the Fourth Proportional to 11,729.19, 16,186.50 and 6,423.67

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Solution

The fourth proportional to 11,729.19, 16,186.50 and 6,423.67 is: 8,864.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.19 : 16,186.50 = 6,423.67 : x
  2. Step 2: Convert to fraction form
    11,729.19/16,186.50 = 6,423.67/x
  3. Step 3: Cross multiply
    11,729.19x = 16,186.50 × 6,423.67
  4. Step 4: Simplify right side
    11,729.19x = 103,976,659.30
  5. Step 5: Solve for x
    x = 103,976,659.30/11,729.19
  6. Step 6: Final answer
    x = 8,864.78

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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.