Home / 21,801.48-32,721.66-10,121.28

Finding the Fourth Proportional to 21,801.48, 32,721.66 and 10,121.28

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Solution

The fourth proportional to 21,801.48, 32,721.66 and 10,121.28 is: 15,190.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,801.48 : 32,721.66 = 10,121.28 : x
  2. Step 2: Convert to fraction form
    21,801.48/32,721.66 = 10,121.28/x
  3. Step 3: Cross multiply
    21,801.48x = 32,721.66 × 10,121.28
  4. Step 4: Simplify right side
    21,801.48x = 331,185,082.92
  5. Step 5: Solve for x
    x = 331,185,082.92/21,801.48
  6. Step 6: Final answer
    x = 15,190.94

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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.