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Finding the Fourth Proportional to 11,861.50, 16,376.48 and 7,614.38

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Solution

The fourth proportional to 11,861.50, 16,376.48 and 7,614.38 is: 10,512.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.50 : 16,376.48 = 7,614.38 : x
  2. Step 2: Convert to fraction form
    11,861.50/16,376.48 = 7,614.38/x
  3. Step 3: Cross multiply
    11,861.50x = 16,376.48 × 7,614.38
  4. Step 4: Simplify right side
    11,861.50x = 124,696,741.78
  5. Step 5: Solve for x
    x = 124,696,741.78/11,861.50
  6. Step 6: Final answer
    x = 10,512.73

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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.