Home / 20,309.68-30,381.90-17,170.12

Finding the Fourth Proportional to 20,309.68, 30,381.90 and 17,170.12

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Solution

The fourth proportional to 20,309.68, 30,381.90 and 17,170.12 is: 25,685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.68 : 30,381.90 = 17,170.12 : x
  2. Step 2: Convert to fraction form
    20,309.68/30,381.90 = 17,170.12/x
  3. Step 3: Cross multiply
    20,309.68x = 30,381.90 × 17,170.12
  4. Step 4: Simplify right side
    20,309.68x = 521,660,868.83
  5. Step 5: Solve for x
    x = 521,660,868.83/20,309.68
  6. Step 6: Final answer
    x = 25,685.33

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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.