Home / 16,327.72-22,555-15,720.84

Finding the Fourth Proportional to 16,327.72, 22,555 and 15,720.84

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Solution

The fourth proportional to 16,327.72, 22,555 and 15,720.84 is: 21,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,327.72 : 22,555 = 15,720.84 : x
  2. Step 2: Convert to fraction form
    16,327.72/22,555 = 15,720.84/x
  3. Step 3: Cross multiply
    16,327.72x = 22,555 × 15,720.84
  4. Step 4: Simplify right side
    16,327.72x = 354,583,546.20
  5. Step 5: Solve for x
    x = 354,583,546.20/16,327.72
  6. Step 6: Final answer
    x = 21,716.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.