Home / 27,318.30-40,990.41-9,789.90

Finding the Fourth Proportional to 27,318.30, 40,990.41 and 9,789.90

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Solution

The fourth proportional to 27,318.30, 40,990.41 and 9,789.90 is: 14,689.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,318.30 : 40,990.41 = 9,789.90 : x
  2. Step 2: Convert to fraction form
    27,318.30/40,990.41 = 9,789.90/x
  3. Step 3: Cross multiply
    27,318.30x = 40,990.41 × 9,789.90
  4. Step 4: Simplify right side
    27,318.30x = 401,292,014.86
  5. Step 5: Solve for x
    x = 401,292,014.86/27,318.30
  6. Step 6: Final answer
    x = 14,689.49

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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.