Home / 27,318.54-40,997.25-21,084.78

Finding the Fourth Proportional to 27,318.54, 40,997.25 and 21,084.78

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Solution

The fourth proportional to 27,318.54, 40,997.25 and 21,084.78 is: 31,642.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,318.54 : 40,997.25 = 21,084.78 : x
  2. Step 2: Convert to fraction form
    27,318.54/40,997.25 = 21,084.78/x
  3. Step 3: Cross multiply
    27,318.54x = 40,997.25 × 21,084.78
  4. Step 4: Simplify right side
    27,318.54x = 864,417,996.86
  5. Step 5: Solve for x
    x = 864,417,996.86/27,318.54
  6. Step 6: Final answer
    x = 31,642.17

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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.