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Finding the Fourth Proportional to 12,544.66, 17,311.28 and 6,879.12

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Solution

The fourth proportional to 12,544.66, 17,311.28 and 6,879.12 is: 9,492.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,544.66 : 17,311.28 = 6,879.12 : x
  2. Step 2: Convert to fraction form
    12,544.66/17,311.28 = 6,879.12/x
  3. Step 3: Cross multiply
    12,544.66x = 17,311.28 × 6,879.12
  4. Step 4: Simplify right side
    12,544.66x = 119,086,372.47
  5. Step 5: Solve for x
    x = 119,086,372.47/12,544.66
  6. Step 6: Final answer
    x = 9,492.99

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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.