Home / 20,651.15-30,976.83-5,068.78

Finding the Fourth Proportional to 20,651.15, 30,976.83 and 5,068.78

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Solution

The fourth proportional to 20,651.15, 30,976.83 and 5,068.78 is: 7,603.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.15 : 30,976.83 = 5,068.78 : x
  2. Step 2: Convert to fraction form
    20,651.15/30,976.83 = 5,068.78/x
  3. Step 3: Cross multiply
    20,651.15x = 30,976.83 × 5,068.78
  4. Step 4: Simplify right side
    20,651.15x = 157,014,658.93
  5. Step 5: Solve for x
    x = 157,014,658.93/20,651.15
  6. Step 6: Final answer
    x = 7,603.19

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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.