Home / 18,375.86-25,359.28-9,992.36

Finding the Fourth Proportional to 18,375.86, 25,359.28 and 9,992.36

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Solution

The fourth proportional to 18,375.86, 25,359.28 and 9,992.36 is: 13,789.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.86 : 25,359.28 = 9,992.36 : x
  2. Step 2: Convert to fraction form
    18,375.86/25,359.28 = 9,992.36/x
  3. Step 3: Cross multiply
    18,375.86x = 25,359.28 × 9,992.36
  4. Step 4: Simplify right side
    18,375.86x = 253,399,055.10
  5. Step 5: Solve for x
    x = 253,399,055.10/18,375.86
  6. Step 6: Final answer
    x = 13,789.78

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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.