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Finding the Fourth Proportional to 19,408.72, 29,103.80 and 5,554

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Solution

The fourth proportional to 19,408.72, 29,103.80 and 5,554 is: 8,328.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,408.72 : 29,103.80 = 5,554 : x
  2. Step 2: Convert to fraction form
    19,408.72/29,103.80 = 5,554/x
  3. Step 3: Cross multiply
    19,408.72x = 29,103.80 × 5,554
  4. Step 4: Simplify right side
    19,408.72x = 161,642,505.20
  5. Step 5: Solve for x
    x = 161,642,505.20/19,408.72
  6. Step 6: Final answer
    x = 8,328.34

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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.