Home / 21,649.75-32,380.81-12,743.86

Finding the Fourth Proportional to 21,649.75, 32,380.81 and 12,743.86

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Solution

The fourth proportional to 21,649.75, 32,380.81 and 12,743.86 is: 19,060.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649.75 : 32,380.81 = 12,743.86 : x
  2. Step 2: Convert to fraction form
    21,649.75/32,380.81 = 12,743.86/x
  3. Step 3: Cross multiply
    21,649.75x = 32,380.81 × 12,743.86
  4. Step 4: Simplify right side
    21,649.75x = 412,656,428.37
  5. Step 5: Solve for x
    x = 412,656,428.37/21,649.75
  6. Step 6: Final answer
    x = 19,060.56

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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.