Home / 20,515.05-30,777.77-5,723.96

Finding the Fourth Proportional to 20,515.05, 30,777.77 and 5,723.96

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Solution

The fourth proportional to 20,515.05, 30,777.77 and 5,723.96 is: 8,587.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.05 : 30,777.77 = 5,723.96 : x
  2. Step 2: Convert to fraction form
    20,515.05/30,777.77 = 5,723.96/x
  3. Step 3: Cross multiply
    20,515.05x = 30,777.77 × 5,723.96
  4. Step 4: Simplify right side
    20,515.05x = 176,170,801.31
  5. Step 5: Solve for x
    x = 176,170,801.31/20,515.05
  6. Step 6: Final answer
    x = 8,587.39

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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.