Home / 12,330.24-18,515.20-5,418.24

Finding the Fourth Proportional to 12,330.24, 18,515.20 and 5,418.24

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Solution

The fourth proportional to 12,330.24, 18,515.20 and 5,418.24 is: 8,136.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.24 : 18,515.20 = 5,418.24 : x
  2. Step 2: Convert to fraction form
    12,330.24/18,515.20 = 5,418.24/x
  3. Step 3: Cross multiply
    12,330.24x = 18,515.20 × 5,418.24
  4. Step 4: Simplify right side
    12,330.24x = 100,319,797.25
  5. Step 5: Solve for x
    x = 100,319,797.25/12,330.24
  6. Step 6: Final answer
    x = 8,136.08

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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.