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Finding the Fourth Proportional to 33,164.80, 49,747.20 and 12,387.20

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Solution

The fourth proportional to 33,164.80, 49,747.20 and 12,387.20 is: 18,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,164.80 : 49,747.20 = 12,387.20 : x
  2. Step 2: Convert to fraction form
    33,164.80/49,747.20 = 12,387.20/x
  3. Step 3: Cross multiply
    33,164.80x = 49,747.20 × 12,387.20
  4. Step 4: Simplify right side
    33,164.80x = 616,228,515.84
  5. Step 5: Solve for x
    x = 616,228,515.84/33,164.80
  6. Step 6: Final answer
    x = 18,580.80

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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.