Home / 18,749.80-28,120.38-5,601.88

Finding the Fourth Proportional to 18,749.80, 28,120.38 and 5,601.88

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Solution

The fourth proportional to 18,749.80, 28,120.38 and 5,601.88 is: 8,401.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.80 : 28,120.38 = 5,601.88 : x
  2. Step 2: Convert to fraction form
    18,749.80/28,120.38 = 5,601.88/x
  3. Step 3: Cross multiply
    18,749.80x = 28,120.38 × 5,601.88
  4. Step 4: Simplify right side
    18,749.80x = 157,526,994.31
  5. Step 5: Solve for x
    x = 157,526,994.31/18,749.80
  6. Step 6: Final answer
    x = 8,401.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.