Home / 12,438.05-17,151.35-9,605.88

Finding the Fourth Proportional to 12,438.05, 17,151.35 and 9,605.88

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Solution

The fourth proportional to 12,438.05, 17,151.35 and 9,605.88 is: 13,245.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.05 : 17,151.35 = 9,605.88 : x
  2. Step 2: Convert to fraction form
    12,438.05/17,151.35 = 9,605.88/x
  3. Step 3: Cross multiply
    12,438.05x = 17,151.35 × 9,605.88
  4. Step 4: Simplify right side
    12,438.05x = 164,753,761.91
  5. Step 5: Solve for x
    x = 164,753,761.91/12,438.05
  6. Step 6: Final answer
    x = 13,245.95

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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.