Home / 18,911.08-28,369.70-5,585.43

Finding the Fourth Proportional to 18,911.08, 28,369.70 and 5,585.43

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Solution

The fourth proportional to 18,911.08, 28,369.70 and 5,585.43 is: 8,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.08 : 28,369.70 = 5,585.43 : x
  2. Step 2: Convert to fraction form
    18,911.08/28,369.70 = 5,585.43/x
  3. Step 3: Cross multiply
    18,911.08x = 28,369.70 × 5,585.43
  4. Step 4: Simplify right side
    18,911.08x = 158,456,831.62
  5. Step 5: Solve for x
    x = 158,456,831.62/18,911.08
  6. Step 6: Final answer
    x = 8,379.05

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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.