Home / 21,934.92-30,270.44-13,318.60

Finding the Fourth Proportional to 21,934.92, 30,270.44 and 13,318.60

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Solution

The fourth proportional to 21,934.92, 30,270.44 and 13,318.60 is: 18,379.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,934.92 : 30,270.44 = 13,318.60 : x
  2. Step 2: Convert to fraction form
    21,934.92/30,270.44 = 13,318.60/x
  3. Step 3: Cross multiply
    21,934.92x = 30,270.44 × 13,318.60
  4. Step 4: Simplify right side
    21,934.92x = 403,159,882.18
  5. Step 5: Solve for x
    x = 403,159,882.18/21,934.92
  6. Step 6: Final answer
    x = 18,379.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.