Home / 20,216.30-27,895.17-11,261.78

Finding the Fourth Proportional to 20,216.30, 27,895.17 and 11,261.78

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Solution

The fourth proportional to 20,216.30, 27,895.17 and 11,261.78 is: 15,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.30 : 27,895.17 = 11,261.78 : x
  2. Step 2: Convert to fraction form
    20,216.30/27,895.17 = 11,261.78/x
  3. Step 3: Cross multiply
    20,216.30x = 27,895.17 × 11,261.78
  4. Step 4: Simplify right side
    20,216.30x = 314,149,267.60
  5. Step 5: Solve for x
    x = 314,149,267.60/20,216.30
  6. Step 6: Final answer
    x = 15,539.40

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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.