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Finding the Fourth Proportional to 20,202.74, 30,248.22 and 10,320.74

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Solution

The fourth proportional to 20,202.74, 30,248.22 and 10,320.74 is: 15,452.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.74 : 30,248.22 = 10,320.74 : x
  2. Step 2: Convert to fraction form
    20,202.74/30,248.22 = 10,320.74/x
  3. Step 3: Cross multiply
    20,202.74x = 30,248.22 × 10,320.74
  4. Step 4: Simplify right side
    20,202.74x = 312,184,014.08
  5. Step 5: Solve for x
    x = 312,184,014.08/20,202.74
  6. Step 6: Final answer
    x = 15,452.56

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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.