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Finding the Fourth Proportional to 18,581.00, 27,879.69 and 7,509.31

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Solution

The fourth proportional to 18,581.00, 27,879.69 and 7,509.31 is: 11,267.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.00 : 27,879.69 = 7,509.31 : x
  2. Step 2: Convert to fraction form
    18,581.00/27,879.69 = 7,509.31/x
  3. Step 3: Cross multiply
    18,581.00x = 27,879.69 × 7,509.31
  4. Step 4: Simplify right side
    18,581.00x = 209,357,193.37
  5. Step 5: Solve for x
    x = 209,357,193.37/18,581.00
  6. Step 6: Final answer
    x = 11,267.28

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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.