Home / 18,387.44-25,383.48-11,319.92

Finding the Fourth Proportional to 18,387.44, 25,383.48 and 11,319.92

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Solution

The fourth proportional to 18,387.44, 25,383.48 and 11,319.92 is: 15,626.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.44 : 25,383.48 = 11,319.92 : x
  2. Step 2: Convert to fraction form
    18,387.44/25,383.48 = 11,319.92/x
  3. Step 3: Cross multiply
    18,387.44x = 25,383.48 × 11,319.92
  4. Step 4: Simplify right side
    18,387.44x = 287,338,962.92
  5. Step 5: Solve for x
    x = 287,338,962.92/18,387.44
  6. Step 6: Final answer
    x = 15,626.92

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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.