Home / 10,861.62-14,989.53-8,499.66

Finding the Fourth Proportional to 10,861.62, 14,989.53 and 8,499.66

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Solution

The fourth proportional to 10,861.62, 14,989.53 and 8,499.66 is: 11,729.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.62 : 14,989.53 = 8,499.66 : x
  2. Step 2: Convert to fraction form
    10,861.62/14,989.53 = 8,499.66/x
  3. Step 3: Cross multiply
    10,861.62x = 14,989.53 × 8,499.66
  4. Step 4: Simplify right side
    10,861.62x = 127,405,908.56
  5. Step 5: Solve for x
    x = 127,405,908.56/10,861.62
  6. Step 6: Final answer
    x = 11,729.92

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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.