Home / 20,124.32-27,770.25-11,171.84

Finding the Fourth Proportional to 20,124.32, 27,770.25 and 11,171.84

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Solution

The fourth proportional to 20,124.32, 27,770.25 and 11,171.84 is: 15,416.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.32 : 27,770.25 = 11,171.84 : x
  2. Step 2: Convert to fraction form
    20,124.32/27,770.25 = 11,171.84/x
  3. Step 3: Cross multiply
    20,124.32x = 27,770.25 × 11,171.84
  4. Step 4: Simplify right side
    20,124.32x = 310,244,789.76
  5. Step 5: Solve for x
    x = 310,244,789.76/20,124.32
  6. Step 6: Final answer
    x = 15,416.41

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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.