Home / 12,965.32-17,867.28-8,979.04

Finding the Fourth Proportional to 12,965.32, 17,867.28 and 8,979.04

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Solution

The fourth proportional to 12,965.32, 17,867.28 and 8,979.04 is: 12,373.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965.32 : 17,867.28 = 8,979.04 : x
  2. Step 2: Convert to fraction form
    12,965.32/17,867.28 = 8,979.04/x
  3. Step 3: Cross multiply
    12,965.32x = 17,867.28 × 8,979.04
  4. Step 4: Simplify right side
    12,965.32x = 160,431,021.81
  5. Step 5: Solve for x
    x = 160,431,021.81/12,965.32
  6. Step 6: Final answer
    x = 12,373.86

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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.