Home / 21,828.60-32,669.28-18,286.20

Finding the Fourth Proportional to 21,828.60, 32,669.28 and 18,286.20

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Solution

The fourth proportional to 21,828.60, 32,669.28 and 18,286.20 is: 27,367.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.60 : 32,669.28 = 18,286.20 : x
  2. Step 2: Convert to fraction form
    21,828.60/32,669.28 = 18,286.20/x
  3. Step 3: Cross multiply
    21,828.60x = 32,669.28 × 18,286.20
  4. Step 4: Simplify right side
    21,828.60x = 597,396,987.94
  5. Step 5: Solve for x
    x = 597,396,987.94/21,828.60
  6. Step 6: Final answer
    x = 27,367.63

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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.