Home / 12,512.87-18,774.53-5,489.26

Finding the Fourth Proportional to 12,512.87, 18,774.53 and 5,489.26

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Solution

The fourth proportional to 12,512.87, 18,774.53 and 5,489.26 is: 8,236.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.87 : 18,774.53 = 5,489.26 : x
  2. Step 2: Convert to fraction form
    12,512.87/18,774.53 = 5,489.26/x
  3. Step 3: Cross multiply
    12,512.87x = 18,774.53 × 5,489.26
  4. Step 4: Simplify right side
    12,512.87x = 103,058,276.55
  5. Step 5: Solve for x
    x = 103,058,276.55/12,512.87
  6. Step 6: Final answer
    x = 8,236.18

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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.