Home / 20,100.42-30,169.13-10,247.04

Finding the Fourth Proportional to 20,100.42, 30,169.13 and 10,247.04

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Solution

The fourth proportional to 20,100.42, 30,169.13 and 10,247.04 is: 15,379.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.42 : 30,169.13 = 10,247.04 : x
  2. Step 2: Convert to fraction form
    20,100.42/30,169.13 = 10,247.04/x
  3. Step 3: Cross multiply
    20,100.42x = 30,169.13 × 10,247.04
  4. Step 4: Simplify right side
    20,100.42x = 309,144,230.64
  5. Step 5: Solve for x
    x = 309,144,230.64/20,100.42
  6. Step 6: Final answer
    x = 15,379.99

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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.