Home / 18,375.60-25,358.76-9,992.16

Finding the Fourth Proportional to 18,375.60, 25,358.76 and 9,992.16

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Solution

The fourth proportional to 18,375.60, 25,358.76 and 9,992.16 is: 13,789.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.60 : 25,358.76 = 9,992.16 : x
  2. Step 2: Convert to fraction form
    18,375.60/25,358.76 = 9,992.16/x
  3. Step 3: Cross multiply
    18,375.60x = 25,358.76 × 9,992.16
  4. Step 4: Simplify right side
    18,375.60x = 253,388,787.32
  5. Step 5: Solve for x
    x = 253,388,787.32/18,375.60
  6. Step 6: Final answer
    x = 13,789.42

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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.