Home / 13,423.68-18,521.92-8,118.80

Finding the Fourth Proportional to 13,423.68, 18,521.92 and 8,118.80

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Solution

The fourth proportional to 13,423.68, 18,521.92 and 8,118.80 is: 11,202.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.68 : 18,521.92 = 8,118.80 : x
  2. Step 2: Convert to fraction form
    13,423.68/18,521.92 = 8,118.80/x
  3. Step 3: Cross multiply
    13,423.68x = 18,521.92 × 8,118.80
  4. Step 4: Simplify right side
    13,423.68x = 150,375,764.10
  5. Step 5: Solve for x
    x = 150,375,764.10/13,423.68
  6. Step 6: Final answer
    x = 11,202.28

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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.