Home / 20,052.26-30,061.47-12,640.38

Finding the Fourth Proportional to 20,052.26, 30,061.47 and 12,640.38

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Solution

The fourth proportional to 20,052.26, 30,061.47 and 12,640.38 is: 18,949.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,052.26 : 30,061.47 = 12,640.38 : x
  2. Step 2: Convert to fraction form
    20,052.26/30,061.47 = 12,640.38/x
  3. Step 3: Cross multiply
    20,052.26x = 30,061.47 × 12,640.38
  4. Step 4: Simplify right side
    20,052.26x = 379,988,244.03
  5. Step 5: Solve for x
    x = 379,988,244.03/20,052.26
  6. Step 6: Final answer
    x = 18,949.90

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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.