Home / 12,351.69-18,517.82-8,839.13

Finding the Fourth Proportional to 12,351.69, 18,517.82 and 8,839.13

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Solution

The fourth proportional to 12,351.69, 18,517.82 and 8,839.13 is: 13,251.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,351.69 : 18,517.82 = 8,839.13 : x
  2. Step 2: Convert to fraction form
    12,351.69/18,517.82 = 8,839.13/x
  3. Step 3: Cross multiply
    12,351.69x = 18,517.82 × 8,839.13
  4. Step 4: Simplify right side
    12,351.69x = 163,681,281.51
  5. Step 5: Solve for x
    x = 163,681,281.51/12,351.69
  6. Step 6: Final answer
    x = 13,251.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.