Home / 11,479.60-17,221.80-3,689.20

Finding the Fourth Proportional to 11,479.60, 17,221.80 and 3,689.20

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Solution

The fourth proportional to 11,479.60, 17,221.80 and 3,689.20 is: 5,534.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.60 : 17,221.80 = 3,689.20 : x
  2. Step 2: Convert to fraction form
    11,479.60/17,221.80 = 3,689.20/x
  3. Step 3: Cross multiply
    11,479.60x = 17,221.80 × 3,689.20
  4. Step 4: Simplify right side
    11,479.60x = 63,534,664.56
  5. Step 5: Solve for x
    x = 63,534,664.56/11,479.60
  6. Step 6: Final answer
    x = 5,534.57

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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.