Home / 18,904.89-28,357.19-5,757.28

Finding the Fourth Proportional to 18,904.89, 28,357.19 and 5,757.28

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Solution

The fourth proportional to 18,904.89, 28,357.19 and 5,757.28 is: 8,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.89 : 28,357.19 = 5,757.28 : x
  2. Step 2: Convert to fraction form
    18,904.89/28,357.19 = 5,757.28/x
  3. Step 3: Cross multiply
    18,904.89x = 28,357.19 × 5,757.28
  4. Step 4: Simplify right side
    18,904.89x = 163,260,204.75
  5. Step 5: Solve for x
    x = 163,260,204.75/18,904.89
  6. Step 6: Final answer
    x = 8,635.87

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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.