Home / 13,522.10-18,660.30-7,553.85

Finding the Fourth Proportional to 13,522.10, 18,660.30 and 7,553.85

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Solution

The fourth proportional to 13,522.10, 18,660.30 and 7,553.85 is: 10,424.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,522.10 : 18,660.30 = 7,553.85 : x
  2. Step 2: Convert to fraction form
    13,522.10/18,660.30 = 7,553.85/x
  3. Step 3: Cross multiply
    13,522.10x = 18,660.30 × 7,553.85
  4. Step 4: Simplify right side
    13,522.10x = 140,957,107.16
  5. Step 5: Solve for x
    x = 140,957,107.16/13,522.10
  6. Step 6: Final answer
    x = 10,424.20

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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.