Home / 30,629.27-42,268.25-17,891.21

Finding the Fourth Proportional to 30,629.27, 42,268.25 and 17,891.21

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Solution

The fourth proportional to 30,629.27, 42,268.25 and 17,891.21 is: 24,689.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,629.27 : 42,268.25 = 17,891.21 : x
  2. Step 2: Convert to fraction form
    30,629.27/42,268.25 = 17,891.21/x
  3. Step 3: Cross multiply
    30,629.27x = 42,268.25 × 17,891.21
  4. Step 4: Simplify right side
    30,629.27x = 756,230,287.48
  5. Step 5: Solve for x
    x = 756,230,287.48/30,629.27
  6. Step 6: Final answer
    x = 24,689.79

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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.