Home / 18,961.24-28,438.62-5,107

Finding the Fourth Proportional to 18,961.24, 28,438.62 and 5,107

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Solution

The fourth proportional to 18,961.24, 28,438.62 and 5,107 is: 7,659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.24 : 28,438.62 = 5,107 : x
  2. Step 2: Convert to fraction form
    18,961.24/28,438.62 = 5,107/x
  3. Step 3: Cross multiply
    18,961.24x = 28,438.62 × 5,107
  4. Step 4: Simplify right side
    18,961.24x = 145,236,032.34
  5. Step 5: Solve for x
    x = 145,236,032.34/18,961.24
  6. Step 6: Final answer
    x = 7,659.63

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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.