Home / 21,327.99-31,996.08-8,179.32

Finding the Fourth Proportional to 21,327.99, 31,996.08 and 8,179.32

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Solution

The fourth proportional to 21,327.99, 31,996.08 and 8,179.32 is: 12,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.99 : 31,996.08 = 8,179.32 : x
  2. Step 2: Convert to fraction form
    21,327.99/31,996.08 = 8,179.32/x
  3. Step 3: Cross multiply
    21,327.99x = 31,996.08 × 8,179.32
  4. Step 4: Simplify right side
    21,327.99x = 261,706,177.07
  5. Step 5: Solve for x
    x = 261,706,177.07/21,327.99
  6. Step 6: Final answer
    x = 12,270.55

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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.