Home / 12,397.96-17,117.22-8,619.88

Finding the Fourth Proportional to 12,397.96, 17,117.22 and 8,619.88

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Solution

The fourth proportional to 12,397.96, 17,117.22 and 8,619.88 is: 11,901.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,397.96 : 17,117.22 = 8,619.88 : x
  2. Step 2: Convert to fraction form
    12,397.96/17,117.22 = 8,619.88/x
  3. Step 3: Cross multiply
    12,397.96x = 17,117.22 × 8,619.88
  4. Step 4: Simplify right side
    12,397.96x = 147,548,382.33
  5. Step 5: Solve for x
    x = 147,548,382.33/12,397.96
  6. Step 6: Final answer
    x = 11,901.02

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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.