Home / 36,121.70-49,851.71-20,808.78

Finding the Fourth Proportional to 36,121.70, 49,851.71 and 20,808.78

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Solution

The fourth proportional to 36,121.70, 49,851.71 and 20,808.78 is: 28,718.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,121.70 : 49,851.71 = 20,808.78 : x
  2. Step 2: Convert to fraction form
    36,121.70/49,851.71 = 20,808.78/x
  3. Step 3: Cross multiply
    36,121.70x = 49,851.71 × 20,808.78
  4. Step 4: Simplify right side
    36,121.70x = 1,037,353,161.97
  5. Step 5: Solve for x
    x = 1,037,353,161.97/36,121.70
  6. Step 6: Final answer
    x = 28,718.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.