Home / 11,728.97-16,186.13-6,423.67

Finding the Fourth Proportional to 11,728.97, 16,186.13 and 6,423.67

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Solution

The fourth proportional to 11,728.97, 16,186.13 and 6,423.67 is: 8,864.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.97 : 16,186.13 = 6,423.67 : x
  2. Step 2: Convert to fraction form
    11,728.97/16,186.13 = 6,423.67/x
  3. Step 3: Cross multiply
    11,728.97x = 16,186.13 × 6,423.67
  4. Step 4: Simplify right side
    11,728.97x = 103,974,369.90
  5. Step 5: Solve for x
    x = 103,974,369.90/11,728.97
  6. Step 6: Final answer
    x = 8,864.75

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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.