Home / 20,216.72-27,899.78-11,264.77

Finding the Fourth Proportional to 20,216.72, 27,899.78 and 11,264.77

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Solution

The fourth proportional to 20,216.72, 27,899.78 and 11,264.77 is: 15,545.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.72 : 27,899.78 = 11,264.77 : x
  2. Step 2: Convert to fraction form
    20,216.72/27,899.78 = 11,264.77/x
  3. Step 3: Cross multiply
    20,216.72x = 27,899.78 × 11,264.77
  4. Step 4: Simplify right side
    20,216.72x = 314,284,604.75
  5. Step 5: Solve for x
    x = 314,284,604.75/20,216.72
  6. Step 6: Final answer
    x = 15,545.78

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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.