Home / 30,716.43-42,380.19-17,286.90

Finding the Fourth Proportional to 30,716.43, 42,380.19 and 17,286.90

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Solution

The fourth proportional to 30,716.43, 42,380.19 and 17,286.90 is: 23,851.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,716.43 : 42,380.19 = 17,286.90 : x
  2. Step 2: Convert to fraction form
    30,716.43/42,380.19 = 17,286.90/x
  3. Step 3: Cross multiply
    30,716.43x = 42,380.19 × 17,286.90
  4. Step 4: Simplify right side
    30,716.43x = 732,622,106.51
  5. Step 5: Solve for x
    x = 732,622,106.51/30,716.43
  6. Step 6: Final answer
    x = 23,851.15

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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.