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Finding the Fourth Proportional to 33,320.70, 50,009.40 and 13,613.40

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Solution

The fourth proportional to 33,320.70, 50,009.40 and 13,613.40 is: 20,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,320.70 : 50,009.40 = 13,613.40 : x
  2. Step 2: Convert to fraction form
    33,320.70/50,009.40 = 13,613.40/x
  3. Step 3: Cross multiply
    33,320.70x = 50,009.40 × 13,613.40
  4. Step 4: Simplify right side
    33,320.70x = 680,797,965.96
  5. Step 5: Solve for x
    x = 680,797,965.96/33,320.70
  6. Step 6: Final answer
    x = 20,431.68

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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.