Home / 29,268.30-40,390.35-15,839.55

Finding the Fourth Proportional to 29,268.30, 40,390.35 and 15,839.55

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Solution

The fourth proportional to 29,268.30, 40,390.35 and 15,839.55 is: 21,858.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,268.30 : 40,390.35 = 15,839.55 : x
  2. Step 2: Convert to fraction form
    29,268.30/40,390.35 = 15,839.55/x
  3. Step 3: Cross multiply
    29,268.30x = 40,390.35 × 15,839.55
  4. Step 4: Simplify right side
    29,268.30x = 639,764,766.39
  5. Step 5: Solve for x
    x = 639,764,766.39/29,268.30
  6. Step 6: Final answer
    x = 21,858.63

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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.