Home / 11,928.38-17,892.57-3,720.38

Finding the Fourth Proportional to 11,928.38, 17,892.57 and 3,720.38

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Solution

The fourth proportional to 11,928.38, 17,892.57 and 3,720.38 is: 5,580.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.38 : 17,892.57 = 3,720.38 : x
  2. Step 2: Convert to fraction form
    11,928.38/17,892.57 = 3,720.38/x
  3. Step 3: Cross multiply
    11,928.38x = 17,892.57 × 3,720.38
  4. Step 4: Simplify right side
    11,928.38x = 66,567,070.11
  5. Step 5: Solve for x
    x = 66,567,070.11/11,928.38
  6. Step 6: Final answer
    x = 5,580.56

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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.