Home / 20,321.60-30,488.56-8,481.08

Finding the Fourth Proportional to 20,321.60, 30,488.56 and 8,481.08

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Solution

The fourth proportional to 20,321.60, 30,488.56 and 8,481.08 is: 12,724.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.60 : 30,488.56 = 8,481.08 : x
  2. Step 2: Convert to fraction form
    20,321.60/30,488.56 = 8,481.08/x
  3. Step 3: Cross multiply
    20,321.60x = 30,488.56 × 8,481.08
  4. Step 4: Simplify right side
    20,321.60x = 258,575,916.44
  5. Step 5: Solve for x
    x = 258,575,916.44/20,321.60
  6. Step 6: Final answer
    x = 12,724.19

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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.