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Finding the Fourth Proportional to 33,700, 50,556.47 and 12,921.88

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Solution

The fourth proportional to 33,700, 50,556.47 and 12,921.88 is: 19,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,700 : 50,556.47 = 12,921.88 : x
  2. Step 2: Convert to fraction form
    33,700/50,556.47 = 12,921.88/x
  3. Step 3: Cross multiply
    33,700x = 50,556.47 × 12,921.88
  4. Step 4: Simplify right side
    33,700x = 653,284,638.56
  5. Step 5: Solve for x
    x = 653,284,638.56/33,700
  6. Step 6: Final answer
    x = 19,385.30

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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.