Home / 18,509.85-27,768.87-5,361.12

Finding the Fourth Proportional to 18,509.85, 27,768.87 and 5,361.12

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Solution

The fourth proportional to 18,509.85, 27,768.87 and 5,361.12 is: 8,042.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.85 : 27,768.87 = 5,361.12 : x
  2. Step 2: Convert to fraction form
    18,509.85/27,768.87 = 5,361.12/x
  3. Step 3: Cross multiply
    18,509.85x = 27,768.87 × 5,361.12
  4. Step 4: Simplify right side
    18,509.85x = 148,872,244.33
  5. Step 5: Solve for x
    x = 148,872,244.33/18,509.85
  6. Step 6: Final answer
    x = 8,042.87

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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.