Home / 20,445.60-30,679.68-10,057.44

Finding the Fourth Proportional to 20,445.60, 30,679.68 and 10,057.44

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Solution

The fourth proportional to 20,445.60, 30,679.68 and 10,057.44 is: 15,091.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.60 : 30,679.68 = 10,057.44 : x
  2. Step 2: Convert to fraction form
    20,445.60/30,679.68 = 10,057.44/x
  3. Step 3: Cross multiply
    20,445.60x = 30,679.68 × 10,057.44
  4. Step 4: Simplify right side
    20,445.60x = 308,559,040.82
  5. Step 5: Solve for x
    x = 308,559,040.82/20,445.60
  6. Step 6: Final answer
    x = 15,091.71

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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.