Home / 18,247.78-27,351.60-7,152.40

Finding the Fourth Proportional to 18,247.78, 27,351.60 and 7,152.40

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Solution

The fourth proportional to 18,247.78, 27,351.60 and 7,152.40 is: 10,720.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,247.78 : 27,351.60 = 7,152.40 : x
  2. Step 2: Convert to fraction form
    18,247.78/27,351.60 = 7,152.40/x
  3. Step 3: Cross multiply
    18,247.78x = 27,351.60 × 7,152.40
  4. Step 4: Simplify right side
    18,247.78x = 195,629,583.84
  5. Step 5: Solve for x
    x = 195,629,583.84/18,247.78
  6. Step 6: Final answer
    x = 10,720.73

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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.