Home / 13,523.18-18,640.82-12,436.97

Finding the Fourth Proportional to 13,523.18, 18,640.82 and 12,436.97

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Solution

The fourth proportional to 13,523.18, 18,640.82 and 12,436.97 is: 17,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,523.18 : 18,640.82 = 12,436.97 : x
  2. Step 2: Convert to fraction form
    13,523.18/18,640.82 = 12,436.97/x
  3. Step 3: Cross multiply
    13,523.18x = 18,640.82 × 12,436.97
  4. Step 4: Simplify right side
    13,523.18x = 231,835,319.12
  5. Step 5: Solve for x
    x = 231,835,319.12/13,523.18
  6. Step 6: Final answer
    x = 17,143.55

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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.