Home / 12,438.55-18,652.56-3,671.11

Finding the Fourth Proportional to 12,438.55, 18,652.56 and 3,671.11

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Solution

The fourth proportional to 12,438.55, 18,652.56 and 3,671.11 is: 5,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.55 : 18,652.56 = 3,671.11 : x
  2. Step 2: Convert to fraction form
    12,438.55/18,652.56 = 3,671.11/x
  3. Step 3: Cross multiply
    12,438.55x = 18,652.56 × 3,671.11
  4. Step 4: Simplify right side
    12,438.55x = 68,475,599.54
  5. Step 5: Solve for x
    x = 68,475,599.54/12,438.55
  6. Step 6: Final answer
    x = 5,505.11

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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.