Home / 30,651.73-42,289.21-17,221.12

Finding the Fourth Proportional to 30,651.73, 42,289.21 and 17,221.12

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Solution

The fourth proportional to 30,651.73, 42,289.21 and 17,221.12 is: 23,759.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,651.73 : 42,289.21 = 17,221.12 : x
  2. Step 2: Convert to fraction form
    30,651.73/42,289.21 = 17,221.12/x
  3. Step 3: Cross multiply
    30,651.73x = 42,289.21 × 17,221.12
  4. Step 4: Simplify right side
    30,651.73x = 728,267,560.12
  5. Step 5: Solve for x
    x = 728,267,560.12/30,651.73
  6. Step 6: Final answer
    x = 23,759.43

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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.