Home / 30,910.20-42,655.57-17,480.95

Finding the Fourth Proportional to 30,910.20, 42,655.57 and 17,480.95

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Solution

The fourth proportional to 30,910.20, 42,655.57 and 17,480.95 is: 24,123.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,910.20 : 42,655.57 = 17,480.95 : x
  2. Step 2: Convert to fraction form
    30,910.20/42,655.57 = 17,480.95/x
  3. Step 3: Cross multiply
    30,910.20x = 42,655.57 × 17,480.95
  4. Step 4: Simplify right side
    30,910.20x = 745,659,736.05
  5. Step 5: Solve for x
    x = 745,659,736.05/30,910.20
  6. Step 6: Final answer
    x = 24,123.42

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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.