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Finding the Fourth Proportional to 28,821.40, 43,231.01 and 9,101.14

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Solution

The fourth proportional to 28,821.40, 43,231.01 and 9,101.14 is: 13,651.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.40 : 43,231.01 = 9,101.14 : x
  2. Step 2: Convert to fraction form
    28,821.40/43,231.01 = 9,101.14/x
  3. Step 3: Cross multiply
    28,821.40x = 43,231.01 × 9,101.14
  4. Step 4: Simplify right side
    28,821.40x = 393,451,258.20
  5. Step 5: Solve for x
    x = 393,451,258.20/28,821.40
  6. Step 6: Final answer
    x = 13,651.36

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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.