Home / 20,188.47-27,859.37-11,236.35

Finding the Fourth Proportional to 20,188.47, 27,859.37 and 11,236.35

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Solution

The fourth proportional to 20,188.47, 27,859.37 and 11,236.35 is: 15,505.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.47 : 27,859.37 = 11,236.35 : x
  2. Step 2: Convert to fraction form
    20,188.47/27,859.37 = 11,236.35/x
  3. Step 3: Cross multiply
    20,188.47x = 27,859.37 × 11,236.35
  4. Step 4: Simplify right side
    20,188.47x = 313,037,575.92
  5. Step 5: Solve for x
    x = 313,037,575.92/20,188.47
  6. Step 6: Final answer
    x = 15,505.76

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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.