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Finding the Fourth Proportional to 30,480.28, 45,797.10 and 19,391.92

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Solution

The fourth proportional to 30,480.28, 45,797.10 and 19,391.92 is: 29,136.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.28 : 45,797.10 = 19,391.92 : x
  2. Step 2: Convert to fraction form
    30,480.28/45,797.10 = 19,391.92/x
  3. Step 3: Cross multiply
    30,480.28x = 45,797.10 × 19,391.92
  4. Step 4: Simplify right side
    30,480.28x = 888,093,699.43
  5. Step 5: Solve for x
    x = 888,093,699.43/30,480.28
  6. Step 6: Final answer
    x = 29,136.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.