Home / 18,375.72-25,358.76-9,992.22

Finding the Fourth Proportional to 18,375.72, 25,358.76 and 9,992.22

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Solution

The fourth proportional to 18,375.72, 25,358.76 and 9,992.22 is: 13,789.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.72 : 25,358.76 = 9,992.22 : x
  2. Step 2: Convert to fraction form
    18,375.72/25,358.76 = 9,992.22/x
  3. Step 3: Cross multiply
    18,375.72x = 25,358.76 × 9,992.22
  4. Step 4: Simplify right side
    18,375.72x = 253,390,308.85
  5. Step 5: Solve for x
    x = 253,390,308.85/18,375.72
  6. Step 6: Final answer
    x = 13,789.41

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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.