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Finding the Fourth Proportional to 9,369.78, 14,053.23 and 3,129.90

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Solution

The fourth proportional to 9,369.78, 14,053.23 and 3,129.90 is: 4,694.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.78 : 14,053.23 = 3,129.90 : x
  2. Step 2: Convert to fraction form
    9,369.78/14,053.23 = 3,129.90/x
  3. Step 3: Cross multiply
    9,369.78x = 14,053.23 × 3,129.90
  4. Step 4: Simplify right side
    9,369.78x = 43,985,204.58
  5. Step 5: Solve for x
    x = 43,985,204.58/9,369.78
  6. Step 6: Final answer
    x = 4,694.37

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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.