Home / 21,076.84-29,085.24-11,645.20

Finding the Fourth Proportional to 21,076.84, 29,085.24 and 11,645.20

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Solution

The fourth proportional to 21,076.84, 29,085.24 and 11,645.20 is: 16,069.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.84 : 29,085.24 = 11,645.20 : x
  2. Step 2: Convert to fraction form
    21,076.84/29,085.24 = 11,645.20/x
  3. Step 3: Cross multiply
    21,076.84x = 29,085.24 × 11,645.20
  4. Step 4: Simplify right side
    21,076.84x = 338,703,436.85
  5. Step 5: Solve for x
    x = 338,703,436.85/21,076.84
  6. Step 6: Final answer
    x = 16,069.93

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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.