Home / 13,747.76-18,976.38-8,082.41

Finding the Fourth Proportional to 13,747.76, 18,976.38 and 8,082.41

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Solution

The fourth proportional to 13,747.76, 18,976.38 and 8,082.41 is: 11,156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.76 : 18,976.38 = 8,082.41 : x
  2. Step 2: Convert to fraction form
    13,747.76/18,976.38 = 8,082.41/x
  3. Step 3: Cross multiply
    13,747.76x = 18,976.38 × 8,082.41
  4. Step 4: Simplify right side
    13,747.76x = 153,374,883.48
  5. Step 5: Solve for x
    x = 153,374,883.48/13,747.76
  6. Step 6: Final answer
    x = 11,156.35

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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.