Home / 21,389.31-29,517.87-11,829.48

Finding the Fourth Proportional to 21,389.31, 29,517.87 and 11,829.48

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Solution

The fourth proportional to 21,389.31, 29,517.87 and 11,829.48 is: 16,325.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.31 : 29,517.87 = 11,829.48 : x
  2. Step 2: Convert to fraction form
    21,389.31/29,517.87 = 11,829.48/x
  3. Step 3: Cross multiply
    21,389.31x = 29,517.87 × 11,829.48
  4. Step 4: Simplify right side
    21,389.31x = 349,180,993.66
  5. Step 5: Solve for x
    x = 349,180,993.66/21,389.31
  6. Step 6: Final answer
    x = 16,325.03

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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.