Home / 12,318.12-17,013.18-8,975.88

Finding the Fourth Proportional to 12,318.12, 17,013.18 and 8,975.88

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Solution

The fourth proportional to 12,318.12, 17,013.18 and 8,975.88 is: 12,397.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.12 : 17,013.18 = 8,975.88 : x
  2. Step 2: Convert to fraction form
    12,318.12/17,013.18 = 8,975.88/x
  3. Step 3: Cross multiply
    12,318.12x = 17,013.18 × 8,975.88
  4. Step 4: Simplify right side
    12,318.12x = 152,708,262.10
  5. Step 5: Solve for x
    x = 152,708,262.10/12,318.12
  6. Step 6: Final answer
    x = 12,397.04

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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.