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Finding the Fourth Proportional to 33,685.20, 50,569.40 and 21,205.20

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Solution

The fourth proportional to 33,685.20, 50,569.40 and 21,205.20 is: 31,833.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,685.20 : 50,569.40 = 21,205.20 : x
  2. Step 2: Convert to fraction form
    33,685.20/50,569.40 = 21,205.20/x
  3. Step 3: Cross multiply
    33,685.20x = 50,569.40 × 21,205.20
  4. Step 4: Simplify right side
    33,685.20x = 1,072,334,240.88
  5. Step 5: Solve for x
    x = 1,072,334,240.88/33,685.20
  6. Step 6: Final answer
    x = 31,833.99

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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.