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Finding the Fourth Proportional to 28,885.40, 43,324.05 and 9,165.95

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Solution

The fourth proportional to 28,885.40, 43,324.05 and 9,165.95 is: 13,747.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.40 : 43,324.05 = 9,165.95 : x
  2. Step 2: Convert to fraction form
    28,885.40/43,324.05 = 9,165.95/x
  3. Step 3: Cross multiply
    28,885.40x = 43,324.05 × 9,165.95
  4. Step 4: Simplify right side
    28,885.40x = 397,106,076.10
  5. Step 5: Solve for x
    x = 397,106,076.10/28,885.40
  6. Step 6: Final answer
    x = 13,747.64

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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.