Home / 12,521.60-18,781.44-3,287.36

Finding the Fourth Proportional to 12,521.60, 18,781.44 and 3,287.36

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Solution

The fourth proportional to 12,521.60, 18,781.44 and 3,287.36 is: 4,930.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.60 : 18,781.44 = 3,287.36 : x
  2. Step 2: Convert to fraction form
    12,521.60/18,781.44 = 3,287.36/x
  3. Step 3: Cross multiply
    12,521.60x = 18,781.44 × 3,287.36
  4. Step 4: Simplify right side
    12,521.60x = 61,741,354.60
  5. Step 5: Solve for x
    x = 61,741,354.60/12,521.60
  6. Step 6: Final answer
    x = 4,930.79

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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.