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Finding the Fourth Proportional to 12,932.60, 17,843.84 and 7,894.99

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Solution

The fourth proportional to 12,932.60, 17,843.84 and 7,894.99 is: 10,893.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,932.60 : 17,843.84 = 7,894.99 : x
  2. Step 2: Convert to fraction form
    12,932.60/17,843.84 = 7,894.99/x
  3. Step 3: Cross multiply
    12,932.60x = 17,843.84 × 7,894.99
  4. Step 4: Simplify right side
    12,932.60x = 140,876,849.14
  5. Step 5: Solve for x
    x = 140,876,849.14/12,932.60
  6. Step 6: Final answer
    x = 10,893.16

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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.