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Finding the Fourth Proportional to 19,757.55, 29,644.33 and 8,658.39

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Solution

The fourth proportional to 19,757.55, 29,644.33 and 8,658.39 is: 12,991.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,757.55 : 29,644.33 = 8,658.39 : x
  2. Step 2: Convert to fraction form
    19,757.55/29,644.33 = 8,658.39/x
  3. Step 3: Cross multiply
    19,757.55x = 29,644.33 × 8,658.39
  4. Step 4: Simplify right side
    19,757.55x = 256,672,000.56
  5. Step 5: Solve for x
    x = 256,672,000.56/19,757.55
  6. Step 6: Final answer
    x = 12,991.09

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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.