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Finding the Fourth Proportional to 30,039.87, 41,454.80 and 16,791.87

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Solution

The fourth proportional to 30,039.87, 41,454.80 and 16,791.87 is: 23,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,039.87 : 41,454.80 = 16,791.87 : x
  2. Step 2: Convert to fraction form
    30,039.87/41,454.80 = 16,791.87/x
  3. Step 3: Cross multiply
    30,039.87x = 41,454.80 × 16,791.87
  4. Step 4: Simplify right side
    30,039.87x = 696,103,528.52
  5. Step 5: Solve for x
    x = 696,103,528.52/30,039.87
  6. Step 6: Final answer
    x = 23,172.65

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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.