Home / 21,571.78-32,357.64-6,781.98

Finding the Fourth Proportional to 21,571.78, 32,357.64 and 6,781.98

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Solution

The fourth proportional to 21,571.78, 32,357.64 and 6,781.98 is: 10,172.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.78 : 32,357.64 = 6,781.98 : x
  2. Step 2: Convert to fraction form
    21,571.78/32,357.64 = 6,781.98/x
  3. Step 3: Cross multiply
    21,571.78x = 32,357.64 × 6,781.98
  4. Step 4: Simplify right side
    21,571.78x = 219,448,867.33
  5. Step 5: Solve for x
    x = 219,448,867.33/21,571.78
  6. Step 6: Final answer
    x = 10,172.96

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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.