Home / 21,727.31-29,983.70-11,791.31

Finding the Fourth Proportional to 21,727.31, 29,983.70 and 11,791.31

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Solution

The fourth proportional to 21,727.31, 29,983.70 and 11,791.31 is: 16,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.31 : 29,983.70 = 11,791.31 : x
  2. Step 2: Convert to fraction form
    21,727.31/29,983.70 = 11,791.31/x
  3. Step 3: Cross multiply
    21,727.31x = 29,983.70 × 11,791.31
  4. Step 4: Simplify right side
    21,727.31x = 353,547,117.65
  5. Step 5: Solve for x
    x = 353,547,117.65/21,727.31
  6. Step 6: Final answer
    x = 16,272.01

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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.