Home / 20,520.14-30,775.68-5,725.08

Finding the Fourth Proportional to 20,520.14, 30,775.68 and 5,725.08

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Solution

The fourth proportional to 20,520.14, 30,775.68 and 5,725.08 is: 8,586.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.14 : 30,775.68 = 5,725.08 : x
  2. Step 2: Convert to fraction form
    20,520.14/30,775.68 = 5,725.08/x
  3. Step 3: Cross multiply
    20,520.14x = 30,775.68 × 5,725.08
  4. Step 4: Simplify right side
    20,520.14x = 176,193,230.05
  5. Step 5: Solve for x
    x = 176,193,230.05/20,520.14
  6. Step 6: Final answer
    x = 8,586.36

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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.