Home / 20,427.24-28,190.33-11,474.55

Finding the Fourth Proportional to 20,427.24, 28,190.33 and 11,474.55

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Solution

The fourth proportional to 20,427.24, 28,190.33 and 11,474.55 is: 15,835.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.24 : 28,190.33 = 11,474.55 : x
  2. Step 2: Convert to fraction form
    20,427.24/28,190.33 = 11,474.55/x
  3. Step 3: Cross multiply
    20,427.24x = 28,190.33 × 11,474.55
  4. Step 4: Simplify right side
    20,427.24x = 323,471,293.73
  5. Step 5: Solve for x
    x = 323,471,293.73/20,427.24
  6. Step 6: Final answer
    x = 15,835.29

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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.