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Finding the Fourth Proportional to 30,378.87, 41,922.68 and 16,950.11

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Solution

The fourth proportional to 30,378.87, 41,922.68 and 16,950.11 is: 23,391.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.87 : 41,922.68 = 16,950.11 : x
  2. Step 2: Convert to fraction form
    30,378.87/41,922.68 = 16,950.11/x
  3. Step 3: Cross multiply
    30,378.87x = 41,922.68 × 16,950.11
  4. Step 4: Simplify right side
    30,378.87x = 710,593,743.13
  5. Step 5: Solve for x
    x = 710,593,743.13/30,378.87
  6. Step 6: Final answer
    x = 23,391.05

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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.