Home / 12,940.16-17,864.20-8,713.44

Finding the Fourth Proportional to 12,940.16, 17,864.20 and 8,713.44

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Solution

The fourth proportional to 12,940.16, 17,864.20 and 8,713.44 is: 12,029.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.16 : 17,864.20 = 8,713.44 : x
  2. Step 2: Convert to fraction form
    12,940.16/17,864.20 = 8,713.44/x
  3. Step 3: Cross multiply
    12,940.16x = 17,864.20 × 8,713.44
  4. Step 4: Simplify right side
    12,940.16x = 155,658,634.85
  5. Step 5: Solve for x
    x = 155,658,634.85/12,940.16
  6. Step 6: Final answer
    x = 12,029.11

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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.