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Finding the Fourth Proportional to 33,889.20, 50,833.80 and 15,421.20

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Solution

The fourth proportional to 33,889.20, 50,833.80 and 15,421.20 is: 23,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,889.20 : 50,833.80 = 15,421.20 : x
  2. Step 2: Convert to fraction form
    33,889.20/50,833.80 = 15,421.20/x
  3. Step 3: Cross multiply
    33,889.20x = 50,833.80 × 15,421.20
  4. Step 4: Simplify right side
    33,889.20x = 783,918,196.56
  5. Step 5: Solve for x
    x = 783,918,196.56/33,889.20
  6. Step 6: Final answer
    x = 23,131.80

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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.