Home / 20,742.06-28,624.10-11,789.62

Finding the Fourth Proportional to 20,742.06, 28,624.10 and 11,789.62

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Solution

The fourth proportional to 20,742.06, 28,624.10 and 11,789.62 is: 16,269.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.06 : 28,624.10 = 11,789.62 : x
  2. Step 2: Convert to fraction form
    20,742.06/28,624.10 = 11,789.62/x
  3. Step 3: Cross multiply
    20,742.06x = 28,624.10 × 11,789.62
  4. Step 4: Simplify right side
    20,742.06x = 337,467,261.84
  5. Step 5: Solve for x
    x = 337,467,261.84/20,742.06
  6. Step 6: Final answer
    x = 16,269.71

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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.