Home / 21,151.31-29,187.54-11,589.29

Finding the Fourth Proportional to 21,151.31, 29,187.54 and 11,589.29

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Solution

The fourth proportional to 21,151.31, 29,187.54 and 11,589.29 is: 15,992.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.31 : 29,187.54 = 11,589.29 : x
  2. Step 2: Convert to fraction form
    21,151.31/29,187.54 = 11,589.29/x
  3. Step 3: Cross multiply
    21,151.31x = 29,187.54 × 11,589.29
  4. Step 4: Simplify right side
    21,151.31x = 338,262,719.51
  5. Step 5: Solve for x
    x = 338,262,719.51/21,151.31
  6. Step 6: Final answer
    x = 15,992.52

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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.