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Finding the Fourth Proportional to 33,210.70, 49,829.40 and 13,490.80

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Solution

The fourth proportional to 33,210.70, 49,829.40 and 13,490.80 is: 20,241.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,210.70 : 49,829.40 = 13,490.80 : x
  2. Step 2: Convert to fraction form
    33,210.70/49,829.40 = 13,490.80/x
  3. Step 3: Cross multiply
    33,210.70x = 49,829.40 × 13,490.80
  4. Step 4: Simplify right side
    33,210.70x = 672,238,469.52
  5. Step 5: Solve for x
    x = 672,238,469.52/33,210.70
  6. Step 6: Final answer
    x = 20,241.62

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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.