Home / 12,371.13-18,553.05-3,603.69

Finding the Fourth Proportional to 12,371.13, 18,553.05 and 3,603.69

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Solution

The fourth proportional to 12,371.13, 18,553.05 and 3,603.69 is: 5,404.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,371.13 : 18,553.05 = 3,603.69 : x
  2. Step 2: Convert to fraction form
    12,371.13/18,553.05 = 3,603.69/x
  3. Step 3: Cross multiply
    12,371.13x = 18,553.05 × 3,603.69
  4. Step 4: Simplify right side
    12,371.13x = 66,859,440.75
  5. Step 5: Solve for x
    x = 66,859,440.75/12,371.13
  6. Step 6: Final answer
    x = 5,404.47

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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.