Home / 21,195.60-31,793.40-16,789.20

Finding the Fourth Proportional to 21,195.60, 31,793.40 and 16,789.20

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Solution

The fourth proportional to 21,195.60, 31,793.40 and 16,789.20 is: 25,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.60 : 31,793.40 = 16,789.20 : x
  2. Step 2: Convert to fraction form
    21,195.60/31,793.40 = 16,789.20/x
  3. Step 3: Cross multiply
    21,195.60x = 31,793.40 × 16,789.20
  4. Step 4: Simplify right side
    21,195.60x = 533,785,751.28
  5. Step 5: Solve for x
    x = 533,785,751.28/21,195.60
  6. Step 6: Final answer
    x = 25,183.80

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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.