Home / 18,865.26-28,303.92-5,717.70

Finding the Fourth Proportional to 18,865.26, 28,303.92 and 5,717.70

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Solution

The fourth proportional to 18,865.26, 28,303.92 and 5,717.70 is: 8,578.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.26 : 28,303.92 = 5,717.70 : x
  2. Step 2: Convert to fraction form
    18,865.26/28,303.92 = 5,717.70/x
  3. Step 3: Cross multiply
    18,865.26x = 28,303.92 × 5,717.70
  4. Step 4: Simplify right side
    18,865.26x = 161,833,323.38
  5. Step 5: Solve for x
    x = 161,833,323.38/18,865.26
  6. Step 6: Final answer
    x = 8,578.38

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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.