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Finding the Fourth Proportional to 21,991.93, 32,987.93 and 5,351.85

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Solution

The fourth proportional to 21,991.93, 32,987.93 and 5,351.85 is: 8,027.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.93 : 32,987.93 = 5,351.85 : x
  2. Step 2: Convert to fraction form
    21,991.93/32,987.93 = 5,351.85/x
  3. Step 3: Cross multiply
    21,991.93x = 32,987.93 × 5,351.85
  4. Step 4: Simplify right side
    21,991.93x = 176,546,453.17
  5. Step 5: Solve for x
    x = 176,546,453.17/21,991.93
  6. Step 6: Final answer
    x = 8,027.78

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1.5x scale

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.