Home / 29,112.88-40,143.99-19,665.04

Finding the Fourth Proportional to 29,112.88, 40,143.99 and 19,665.04

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Solution

The fourth proportional to 29,112.88, 40,143.99 and 19,665.04 is: 27,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,112.88 : 40,143.99 = 19,665.04 : x
  2. Step 2: Convert to fraction form
    29,112.88/40,143.99 = 19,665.04/x
  3. Step 3: Cross multiply
    29,112.88x = 40,143.99 × 19,665.04
  4. Step 4: Simplify right side
    29,112.88x = 789,433,169.11
  5. Step 5: Solve for x
    x = 789,433,169.11/29,112.88
  6. Step 6: Final answer
    x = 27,116.29

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1.5x scale

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.