Home / 12,438.97-18,607.20-11,344.11

Finding the Fourth Proportional to 12,438.97, 18,607.20 and 11,344.11

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Solution

The fourth proportional to 12,438.97, 18,607.20 and 11,344.11 is: 16,969.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.97 : 18,607.20 = 11,344.11 : x
  2. Step 2: Convert to fraction form
    12,438.97/18,607.20 = 11,344.11/x
  3. Step 3: Cross multiply
    12,438.97x = 18,607.20 × 11,344.11
  4. Step 4: Simplify right side
    12,438.97x = 211,082,123.59
  5. Step 5: Solve for x
    x = 211,082,123.59/12,438.97
  6. Step 6: Final answer
    x = 16,969.42

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1.5x scale

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.