Home / 20,885.84-31,327.34-9,795

Finding the Fourth Proportional to 20,885.84, 31,327.34 and 9,795

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Solution

The fourth proportional to 20,885.84, 31,327.34 and 9,795 is: 14,691.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.84 : 31,327.34 = 9,795 : x
  2. Step 2: Convert to fraction form
    20,885.84/31,327.34 = 9,795/x
  3. Step 3: Cross multiply
    20,885.84x = 31,327.34 × 9,795
  4. Step 4: Simplify right side
    20,885.84x = 306,851,246.33
  5. Step 5: Solve for x
    x = 306,851,246.33/20,885.84
  6. Step 6: Final answer
    x = 14,691.84

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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.