Home / 13,378.56-18,462.30-8,671.02

Finding the Fourth Proportional to 13,378.56, 18,462.30 and 8,671.02

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Solution

The fourth proportional to 13,378.56, 18,462.30 and 8,671.02 is: 11,965.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378.56 : 18,462.30 = 8,671.02 : x
  2. Step 2: Convert to fraction form
    13,378.56/18,462.30 = 8,671.02/x
  3. Step 3: Cross multiply
    13,378.56x = 18,462.30 × 8,671.02
  4. Step 4: Simplify right side
    13,378.56x = 160,086,972.55
  5. Step 5: Solve for x
    x = 160,086,972.55/13,378.56
  6. Step 6: Final answer
    x = 11,965.93

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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.