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Finding the Fourth Proportional to 11,715.80, 17,423.02 and 11,346.72

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Solution

The fourth proportional to 11,715.80, 17,423.02 and 11,346.72 is: 16,874.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.80 : 17,423.02 = 11,346.72 : x
  2. Step 2: Convert to fraction form
    11,715.80/17,423.02 = 11,346.72/x
  3. Step 3: Cross multiply
    11,715.80x = 17,423.02 × 11,346.72
  4. Step 4: Simplify right side
    11,715.80x = 197,694,129.49
  5. Step 5: Solve for x
    x = 197,694,129.49/11,715.80
  6. Step 6: Final answer
    x = 16,874.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.