Home / 29,111.88-40,142.61-19,664.04

Finding the Fourth Proportional to 29,111.88, 40,142.61 and 19,664.04

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Solution

The fourth proportional to 29,111.88, 40,142.61 and 19,664.04 is: 27,114.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,111.88 : 40,142.61 = 19,664.04 : x
  2. Step 2: Convert to fraction form
    29,111.88/40,142.61 = 19,664.04/x
  3. Step 3: Cross multiply
    29,111.88x = 40,142.61 × 19,664.04
  4. Step 4: Simplify right side
    29,111.88x = 789,365,888.74
  5. Step 5: Solve for x
    x = 789,365,888.74/29,111.88
  6. Step 6: Final answer
    x = 27,114.91

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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.