Home / 21,911.52-30,237.89-11,839.96

Finding the Fourth Proportional to 21,911.52, 30,237.89 and 11,839.96

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Solution

The fourth proportional to 21,911.52, 30,237.89 and 11,839.96 is: 16,339.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911.52 : 30,237.89 = 11,839.96 : x
  2. Step 2: Convert to fraction form
    21,911.52/30,237.89 = 11,839.96/x
  3. Step 3: Cross multiply
    21,911.52x = 30,237.89 × 11,839.96
  4. Step 4: Simplify right side
    21,911.52x = 358,015,408.08
  5. Step 5: Solve for x
    x = 358,015,408.08/21,911.52
  6. Step 6: Final answer
    x = 16,339.14

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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.