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Finding the Fourth Proportional to 12,247.75, 16,901.90 and 7,279.75

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Solution

The fourth proportional to 12,247.75, 16,901.90 and 7,279.75 is: 10,046.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.75 : 16,901.90 = 7,279.75 : x
  2. Step 2: Convert to fraction form
    12,247.75/16,901.90 = 7,279.75/x
  3. Step 3: Cross multiply
    12,247.75x = 16,901.90 × 7,279.75
  4. Step 4: Simplify right side
    12,247.75x = 123,041,606.53
  5. Step 5: Solve for x
    x = 123,041,606.53/12,247.75
  6. Step 6: Final answer
    x = 10,046.06

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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.