Home / 29,268.79-40,391.04-15,840.05

Finding the Fourth Proportional to 29,268.79, 40,391.04 and 15,840.05

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Solution

The fourth proportional to 29,268.79, 40,391.04 and 15,840.05 is: 21,859.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,268.79 : 40,391.04 = 15,840.05 : x
  2. Step 2: Convert to fraction form
    29,268.79/40,391.04 = 15,840.05/x
  3. Step 3: Cross multiply
    29,268.79x = 40,391.04 × 15,840.05
  4. Step 4: Simplify right side
    29,268.79x = 639,796,093.15
  5. Step 5: Solve for x
    x = 639,796,093.15/29,268.79
  6. Step 6: Final answer
    x = 21,859.33

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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.