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Finding the Fourth Proportional to 21,879.92, 32,832.60 and 9,228.89

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Solution

The fourth proportional to 21,879.92, 32,832.60 and 9,228.89 is: 13,848.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,879.92 : 32,832.60 = 9,228.89 : x
  2. Step 2: Convert to fraction form
    21,879.92/32,832.60 = 9,228.89/x
  3. Step 3: Cross multiply
    21,879.92x = 32,832.60 × 9,228.89
  4. Step 4: Simplify right side
    21,879.92x = 303,008,243.51
  5. Step 5: Solve for x
    x = 303,008,243.51/21,879.92
  6. Step 6: Final answer
    x = 13,848.69

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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.