Home / 21,039.12-29,044.51-13,083.91

Finding the Fourth Proportional to 21,039.12, 29,044.51 and 13,083.91

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Solution

The fourth proportional to 21,039.12, 29,044.51 and 13,083.91 is: 18,062.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039.12 : 29,044.51 = 13,083.91 : x
  2. Step 2: Convert to fraction form
    21,039.12/29,044.51 = 13,083.91/x
  3. Step 3: Cross multiply
    21,039.12x = 29,044.51 × 13,083.91
  4. Step 4: Simplify right side
    21,039.12x = 380,015,649.51
  5. Step 5: Solve for x
    x = 380,015,649.51/21,039.12
  6. Step 6: Final answer
    x = 18,062.34

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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.