Home / 20,387.75-30,574.31-11,034.68

Finding the Fourth Proportional to 20,387.75, 30,574.31 and 11,034.68

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Solution

The fourth proportional to 20,387.75, 30,574.31 and 11,034.68 is: 16,548.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.75 : 30,574.31 = 11,034.68 : x
  2. Step 2: Convert to fraction form
    20,387.75/30,574.31 = 11,034.68/x
  3. Step 3: Cross multiply
    20,387.75x = 30,574.31 × 11,034.68
  4. Step 4: Simplify right side
    20,387.75x = 337,377,519.03
  5. Step 5: Solve for x
    x = 337,377,519.03/20,387.75
  6. Step 6: Final answer
    x = 16,548.05

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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.