Home / 20,742.05-28,624.06-11,310.61

Finding the Fourth Proportional to 20,742.05, 28,624.06 and 11,310.61

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Solution

The fourth proportional to 20,742.05, 28,624.06 and 11,310.61 is: 15,608.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.05 : 28,624.06 = 11,310.61 : x
  2. Step 2: Convert to fraction form
    20,742.05/28,624.06 = 11,310.61/x
  3. Step 3: Cross multiply
    20,742.05x = 28,624.06 × 11,310.61
  4. Step 4: Simplify right side
    20,742.05x = 323,755,579.28
  5. Step 5: Solve for x
    x = 323,755,579.28/20,742.05
  6. Step 6: Final answer
    x = 15,608.66

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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.