Home / 41,989.72-62,969.88-12,399.68

Finding the Fourth Proportional to 41,989.72, 62,969.88 and 12,399.68

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Solution

The fourth proportional to 41,989.72, 62,969.88 and 12,399.68 is: 18,595.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,989.72 : 62,969.88 = 12,399.68 : x
  2. Step 2: Convert to fraction form
    41,989.72/62,969.88 = 12,399.68/x
  3. Step 3: Cross multiply
    41,989.72x = 62,969.88 × 12,399.68
  4. Step 4: Simplify right side
    41,989.72x = 780,806,361.64
  5. Step 5: Solve for x
    x = 780,806,361.64/41,989.72
  6. Step 6: Final answer
    x = 18,595.18

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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.