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Finding the Fourth Proportional to 12,612.26, 17,404.66 and 7,899.14

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Solution

The fourth proportional to 12,612.26, 17,404.66 and 7,899.14 is: 10,900.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.26 : 17,404.66 = 7,899.14 : x
  2. Step 2: Convert to fraction form
    12,612.26/17,404.66 = 7,899.14/x
  3. Step 3: Cross multiply
    12,612.26x = 17,404.66 × 7,899.14
  4. Step 4: Simplify right side
    12,612.26x = 137,481,845.99
  5. Step 5: Solve for x
    x = 137,481,845.99/12,612.26
  6. Step 6: Final answer
    x = 10,900.65

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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.