Home / 20,188.20-27,859.51-11,235.56

Finding the Fourth Proportional to 20,188.20, 27,859.51 and 11,235.56

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Solution

The fourth proportional to 20,188.20, 27,859.51 and 11,235.56 is: 15,504.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.20 : 27,859.51 = 11,235.56 : x
  2. Step 2: Convert to fraction form
    20,188.20/27,859.51 = 11,235.56/x
  3. Step 3: Cross multiply
    20,188.20x = 27,859.51 × 11,235.56
  4. Step 4: Simplify right side
    20,188.20x = 313,017,196.18
  5. Step 5: Solve for x
    x = 313,017,196.18/20,188.20
  6. Step 6: Final answer
    x = 15,504.96

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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.