Home / 21,539.36-32,302.80-8,388.80

Finding the Fourth Proportional to 21,539.36, 32,302.80 and 8,388.80

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Solution

The fourth proportional to 21,539.36, 32,302.80 and 8,388.80 is: 12,580.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.36 : 32,302.80 = 8,388.80 : x
  2. Step 2: Convert to fraction form
    21,539.36/32,302.80 = 8,388.80/x
  3. Step 3: Cross multiply
    21,539.36x = 32,302.80 × 8,388.80
  4. Step 4: Simplify right side
    21,539.36x = 270,981,728.64
  5. Step 5: Solve for x
    x = 270,981,728.64/21,539.36
  6. Step 6: Final answer
    x = 12,580.77

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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.