Home / 20,458.05-30,517.10-20,119.74

Finding the Fourth Proportional to 20,458.05, 30,517.10 and 20,119.74

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Solution

The fourth proportional to 20,458.05, 30,517.10 and 20,119.74 is: 30,012.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.05 : 30,517.10 = 20,119.74 : x
  2. Step 2: Convert to fraction form
    20,458.05/30,517.10 = 20,119.74/x
  3. Step 3: Cross multiply
    20,458.05x = 30,517.10 × 20,119.74
  4. Step 4: Simplify right side
    20,458.05x = 613,996,016.96
  5. Step 5: Solve for x
    x = 613,996,016.96/20,458.05
  6. Step 6: Final answer
    x = 30,012.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.