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Finding the Fourth Proportional to 33,515.20, 50,143.20 and 21,851.20

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Solution

The fourth proportional to 33,515.20, 50,143.20 and 21,851.20 is: 32,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,515.20 : 50,143.20 = 21,851.20 : x
  2. Step 2: Convert to fraction form
    33,515.20/50,143.20 = 21,851.20/x
  3. Step 3: Cross multiply
    33,515.20x = 50,143.20 × 21,851.20
  4. Step 4: Simplify right side
    33,515.20x = 1,095,689,091.84
  5. Step 5: Solve for x
    x = 1,095,689,091.84/33,515.20
  6. Step 6: Final answer
    x = 32,692.30

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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.