Home / 12,934.40-17,843.20-8,742.40

Finding the Fourth Proportional to 12,934.40, 17,843.20 and 8,742.40

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Solution

The fourth proportional to 12,934.40, 17,843.20 and 8,742.40 is: 12,060.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,934.40 : 17,843.20 = 8,742.40 : x
  2. Step 2: Convert to fraction form
    12,934.40/17,843.20 = 8,742.40/x
  3. Step 3: Cross multiply
    12,934.40x = 17,843.20 × 8,742.40
  4. Step 4: Simplify right side
    12,934.40x = 155,992,391.68
  5. Step 5: Solve for x
    x = 155,992,391.68/12,934.40
  6. Step 6: Final answer
    x = 12,060.27

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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.