Home / 12,440.30-18,660.45-5,514.80

Finding the Fourth Proportional to 12,440.30, 18,660.45 and 5,514.80

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Solution

The fourth proportional to 12,440.30, 18,660.45 and 5,514.80 is: 8,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.30 : 18,660.45 = 5,514.80 : x
  2. Step 2: Convert to fraction form
    12,440.30/18,660.45 = 5,514.80/x
  3. Step 3: Cross multiply
    12,440.30x = 18,660.45 × 5,514.80
  4. Step 4: Simplify right side
    12,440.30x = 102,908,649.66
  5. Step 5: Solve for x
    x = 102,908,649.66/12,440.30
  6. Step 6: Final answer
    x = 8,272.20

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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.