Home / 12,700.32-17,531.28-8,979.36

Finding the Fourth Proportional to 12,700.32, 17,531.28 and 8,979.36

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Solution

The fourth proportional to 12,700.32, 17,531.28 and 8,979.36 is: 12,394.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.32 : 17,531.28 = 8,979.36 : x
  2. Step 2: Convert to fraction form
    12,700.32/17,531.28 = 8,979.36/x
  3. Step 3: Cross multiply
    12,700.32x = 17,531.28 × 8,979.36
  4. Step 4: Simplify right side
    12,700.32x = 157,419,674.38
  5. Step 5: Solve for x
    x = 157,419,674.38/12,700.32
  6. Step 6: Final answer
    x = 12,394.94

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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.