Home / 21,106-29,123.76-11,673.28

Finding the Fourth Proportional to 21,106, 29,123.76 and 11,673.28

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Solution

The fourth proportional to 21,106, 29,123.76 and 11,673.28 is: 16,107.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106 : 29,123.76 = 11,673.28 : x
  2. Step 2: Convert to fraction form
    21,106/29,123.76 = 11,673.28/x
  3. Step 3: Cross multiply
    21,106x = 29,123.76 × 11,673.28
  4. Step 4: Simplify right side
    21,106x = 339,969,805.13
  5. Step 5: Solve for x
    x = 339,969,805.13/21,106
  6. Step 6: Final answer
    x = 16,107.73

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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.