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Finding the Fourth Proportional to 18,350.40, 27,535.99 and 7,819.31

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Solution

The fourth proportional to 18,350.40, 27,535.99 and 7,819.31 is: 11,733.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,350.40 : 27,535.99 = 7,819.31 : x
  2. Step 2: Convert to fraction form
    18,350.40/27,535.99 = 7,819.31/x
  3. Step 3: Cross multiply
    18,350.40x = 27,535.99 × 7,819.31
  4. Step 4: Simplify right side
    18,350.40x = 215,312,491.26
  5. Step 5: Solve for x
    x = 215,312,491.26/18,350.40
  6. Step 6: Final answer
    x = 11,733.39

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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.