Home / 13,726.11-18,942.03-7,438.49

Finding the Fourth Proportional to 13,726.11, 18,942.03 and 7,438.49

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Solution

The fourth proportional to 13,726.11, 18,942.03 and 7,438.49 is: 10,265.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.11 : 18,942.03 = 7,438.49 : x
  2. Step 2: Convert to fraction form
    13,726.11/18,942.03 = 7,438.49/x
  3. Step 3: Cross multiply
    13,726.11x = 18,942.03 × 7,438.49
  4. Step 4: Simplify right side
    13,726.11x = 140,900,024.62
  5. Step 5: Solve for x
    x = 140,900,024.62/13,726.11
  6. Step 6: Final answer
    x = 10,265.11

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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.