Home / 21,750.92-32,634.16-13,421.24

Finding the Fourth Proportional to 21,750.92, 32,634.16 and 13,421.24

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Solution

The fourth proportional to 21,750.92, 32,634.16 and 13,421.24 is: 20,136.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.92 : 32,634.16 = 13,421.24 : x
  2. Step 2: Convert to fraction form
    21,750.92/32,634.16 = 13,421.24/x
  3. Step 3: Cross multiply
    21,750.92x = 32,634.16 × 13,421.24
  4. Step 4: Simplify right side
    21,750.92x = 437,990,893.56
  5. Step 5: Solve for x
    x = 437,990,893.56/21,750.92
  6. Step 6: Final answer
    x = 20,136.66

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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.