Home / 20,215.38-30,329.18-10,361.64

Finding the Fourth Proportional to 20,215.38, 30,329.18 and 10,361.64

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Solution

The fourth proportional to 20,215.38, 30,329.18 and 10,361.64 is: 15,545.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.38 : 30,329.18 = 10,361.64 : x
  2. Step 2: Convert to fraction form
    20,215.38/30,329.18 = 10,361.64/x
  3. Step 3: Cross multiply
    20,215.38x = 30,329.18 × 10,361.64
  4. Step 4: Simplify right side
    20,215.38x = 314,260,044.66
  5. Step 5: Solve for x
    x = 314,260,044.66/20,215.38
  6. Step 6: Final answer
    x = 15,545.59

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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.