Home / 29,268.42-40,390.09-15,839.38

Finding the Fourth Proportional to 29,268.42, 40,390.09 and 15,839.38

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Solution

The fourth proportional to 29,268.42, 40,390.09 and 15,839.38 is: 21,858.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,268.42 : 40,390.09 = 15,839.38 : x
  2. Step 2: Convert to fraction form
    29,268.42/40,390.09 = 15,839.38/x
  3. Step 3: Cross multiply
    29,268.42x = 40,390.09 × 15,839.38
  4. Step 4: Simplify right side
    29,268.42x = 639,753,983.74
  5. Step 5: Solve for x
    x = 639,753,983.74/29,268.42
  6. Step 6: Final answer
    x = 21,858.17

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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.