Home / 13,679.52-18,874.26-8,372.40

Finding the Fourth Proportional to 13,679.52, 18,874.26 and 8,372.40

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Solution

The fourth proportional to 13,679.52, 18,874.26 and 8,372.40 is: 11,551.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.52 : 18,874.26 = 8,372.40 : x
  2. Step 2: Convert to fraction form
    13,679.52/18,874.26 = 8,372.40/x
  3. Step 3: Cross multiply
    13,679.52x = 18,874.26 × 8,372.40
  4. Step 4: Simplify right side
    13,679.52x = 158,022,854.42
  5. Step 5: Solve for x
    x = 158,022,854.42/13,679.52
  6. Step 6: Final answer
    x = 11,551.78

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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.