Home / 12,287.26-18,440.10-9,008.80

Finding the Fourth Proportional to 12,287.26, 18,440.10 and 9,008.80

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Solution

The fourth proportional to 12,287.26, 18,440.10 and 9,008.80 is: 13,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.26 : 18,440.10 = 9,008.80 : x
  2. Step 2: Convert to fraction form
    12,287.26/18,440.10 = 9,008.80/x
  3. Step 3: Cross multiply
    12,287.26x = 18,440.10 × 9,008.80
  4. Step 4: Simplify right side
    12,287.26x = 166,123,172.88
  5. Step 5: Solve for x
    x = 166,123,172.88/12,287.26
  6. Step 6: Final answer
    x = 13,519.95

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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.