Home / 21,047.51-29,044.66-11,487.16

Finding the Fourth Proportional to 21,047.51, 29,044.66 and 11,487.16

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Solution

The fourth proportional to 21,047.51, 29,044.66 and 11,487.16 is: 15,851.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.51 : 29,044.66 = 11,487.16 : x
  2. Step 2: Convert to fraction form
    21,047.51/29,044.66 = 11,487.16/x
  3. Step 3: Cross multiply
    21,047.51x = 29,044.66 × 11,487.16
  4. Step 4: Simplify right side
    21,047.51x = 333,640,453.91
  5. Step 5: Solve for x
    x = 333,640,453.91/21,047.51
  6. Step 6: Final answer
    x = 15,851.78

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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.