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Finding the Fourth Proportional to 23,918.40, 35,879.40 and 6,387.75

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Solution

The fourth proportional to 23,918.40, 35,879.40 and 6,387.75 is: 9,582.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,918.40 : 35,879.40 = 6,387.75 : x
  2. Step 2: Convert to fraction form
    23,918.40/35,879.40 = 6,387.75/x
  3. Step 3: Cross multiply
    23,918.40x = 35,879.40 × 6,387.75
  4. Step 4: Simplify right side
    23,918.40x = 229,188,637.35
  5. Step 5: Solve for x
    x = 229,188,637.35/23,918.40
  6. Step 6: Final answer
    x = 9,582.11

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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.