Home / 20,102.48-30,123.12-10,226.96

Finding the Fourth Proportional to 20,102.48, 30,123.12 and 10,226.96

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Solution

The fourth proportional to 20,102.48, 30,123.12 and 10,226.96 is: 15,324.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.48 : 30,123.12 = 10,226.96 : x
  2. Step 2: Convert to fraction form
    20,102.48/30,123.12 = 10,226.96/x
  3. Step 3: Cross multiply
    20,102.48x = 30,123.12 × 10,226.96
  4. Step 4: Simplify right side
    20,102.48x = 308,067,943.32
  5. Step 5: Solve for x
    x = 308,067,943.32/20,102.48
  6. Step 6: Final answer
    x = 15,324.87

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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.