Home / 29,268.39-40,390.38-15,839.65

Finding the Fourth Proportional to 29,268.39, 40,390.38 and 15,839.65

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Solution

The fourth proportional to 29,268.39, 40,390.38 and 15,839.65 is: 21,858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,268.39 : 40,390.38 = 15,839.65 : x
  2. Step 2: Convert to fraction form
    29,268.39/40,390.38 = 15,839.65/x
  3. Step 3: Cross multiply
    29,268.39x = 40,390.38 × 15,839.65
  4. Step 4: Simplify right side
    29,268.39x = 639,769,482.57
  5. Step 5: Solve for x
    x = 639,769,482.57/29,268.39
  6. Step 6: Final answer
    x = 21,858.72

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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.