Home / 21,329.76-29,435.71-11,898.12

Finding the Fourth Proportional to 21,329.76, 29,435.71 and 11,898.12

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Solution

The fourth proportional to 21,329.76, 29,435.71 and 11,898.12 is: 16,419.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.76 : 29,435.71 = 11,898.12 : x
  2. Step 2: Convert to fraction form
    21,329.76/29,435.71 = 11,898.12/x
  3. Step 3: Cross multiply
    21,329.76x = 29,435.71 × 11,898.12
  4. Step 4: Simplify right side
    21,329.76x = 350,229,609.87
  5. Step 5: Solve for x
    x = 350,229,609.87/21,329.76
  6. Step 6: Final answer
    x = 16,419.76

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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.