Home / 29,268.83-40,390.65-15,839.78

Finding the Fourth Proportional to 29,268.83, 40,390.65 and 15,839.78

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Solution

The fourth proportional to 29,268.83, 40,390.65 and 15,839.78 is: 21,858.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,268.83 : 40,390.65 = 15,839.78 : x
  2. Step 2: Convert to fraction form
    29,268.83/40,390.65 = 15,839.78/x
  3. Step 3: Cross multiply
    29,268.83x = 40,390.65 × 15,839.78
  4. Step 4: Simplify right side
    29,268.83x = 639,778,808.10
  5. Step 5: Solve for x
    x = 639,778,808.10/29,268.83
  6. Step 6: Final answer
    x = 21,858.71

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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.