Home / 20,216.97-27,899.50-11,720.74

Finding the Fourth Proportional to 20,216.97, 27,899.50 and 11,720.74

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Solution

The fourth proportional to 20,216.97, 27,899.50 and 11,720.74 is: 16,174.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.97 : 27,899.50 = 11,720.74 : x
  2. Step 2: Convert to fraction form
    20,216.97/27,899.50 = 11,720.74/x
  3. Step 3: Cross multiply
    20,216.97x = 27,899.50 × 11,720.74
  4. Step 4: Simplify right side
    20,216.97x = 327,002,785.63
  5. Step 5: Solve for x
    x = 327,002,785.63/20,216.97
  6. Step 6: Final answer
    x = 16,174.67

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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.