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Finding the Fourth Proportional to 33,459.80, 50,189.70 and 13,728.20

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Solution

The fourth proportional to 33,459.80, 50,189.70 and 13,728.20 is: 20,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,459.80 : 50,189.70 = 13,728.20 : x
  2. Step 2: Convert to fraction form
    33,459.80/50,189.70 = 13,728.20/x
  3. Step 3: Cross multiply
    33,459.80x = 50,189.70 × 13,728.20
  4. Step 4: Simplify right side
    33,459.80x = 689,014,239.54
  5. Step 5: Solve for x
    x = 689,014,239.54/33,459.80
  6. Step 6: Final answer
    x = 20,592.30

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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.