Home / 12,255.33-18,381.03-3,488.20

Finding the Fourth Proportional to 12,255.33, 18,381.03 and 3,488.20

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Solution

The fourth proportional to 12,255.33, 18,381.03 and 3,488.20 is: 5,231.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.33 : 18,381.03 = 3,488.20 : x
  2. Step 2: Convert to fraction form
    12,255.33/18,381.03 = 3,488.20/x
  3. Step 3: Cross multiply
    12,255.33x = 18,381.03 × 3,488.20
  4. Step 4: Simplify right side
    12,255.33x = 64,116,649.81
  5. Step 5: Solve for x
    x = 64,116,649.81/12,255.33
  6. Step 6: Final answer
    x = 5,231.73

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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.