Home / 30,469.92-42,049.17-21,533.19

Finding the Fourth Proportional to 30,469.92, 42,049.17 and 21,533.19

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Solution

The fourth proportional to 30,469.92, 42,049.17 and 21,533.19 is: 29,716.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,469.92 : 42,049.17 = 21,533.19 : x
  2. Step 2: Convert to fraction form
    30,469.92/42,049.17 = 21,533.19/x
  3. Step 3: Cross multiply
    30,469.92x = 42,049.17 × 21,533.19
  4. Step 4: Simplify right side
    30,469.92x = 905,452,766.95
  5. Step 5: Solve for x
    x = 905,452,766.95/30,469.92
  6. Step 6: Final answer
    x = 29,716.28

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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.