Home / 18,375.48-25,358.04-9,991.96

Finding the Fourth Proportional to 18,375.48, 25,358.04 and 9,991.96

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Solution

The fourth proportional to 18,375.48, 25,358.04 and 9,991.96 is: 13,788.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.48 : 25,358.04 = 9,991.96 : x
  2. Step 2: Convert to fraction form
    18,375.48/25,358.04 = 9,991.96/x
  3. Step 3: Cross multiply
    18,375.48x = 25,358.04 × 9,991.96
  4. Step 4: Simplify right side
    18,375.48x = 253,376,521.36
  5. Step 5: Solve for x
    x = 253,376,521.36/18,375.48
  6. Step 6: Final answer
    x = 13,788.84

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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.