Home / 36,121.12-49,851.28-20,209.60

Finding the Fourth Proportional to 36,121.12, 49,851.28 and 20,209.60

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Solution

The fourth proportional to 36,121.12, 49,851.28 and 20,209.60 is: 27,891.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,121.12 : 49,851.28 = 20,209.60 : x
  2. Step 2: Convert to fraction form
    36,121.12/49,851.28 = 20,209.60/x
  3. Step 3: Cross multiply
    36,121.12x = 49,851.28 × 20,209.60
  4. Step 4: Simplify right side
    36,121.12x = 1,007,474,428.29
  5. Step 5: Solve for x
    x = 1,007,474,428.29/36,121.12
  6. Step 6: Final answer
    x = 27,891.56

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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.