Home / 20,895.72-31,346.52-6,105.75

Finding the Fourth Proportional to 20,895.72, 31,346.52 and 6,105.75

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Solution

The fourth proportional to 20,895.72, 31,346.52 and 6,105.75 is: 9,159.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.72 : 31,346.52 = 6,105.75 : x
  2. Step 2: Convert to fraction form
    20,895.72/31,346.52 = 6,105.75/x
  3. Step 3: Cross multiply
    20,895.72x = 31,346.52 × 6,105.75
  4. Step 4: Simplify right side
    20,895.72x = 191,394,014.49
  5. Step 5: Solve for x
    x = 191,394,014.49/20,895.72
  6. Step 6: Final answer
    x = 9,159.48

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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.