Home / 20,827.74-28,742.19-11,267.64

Finding the Fourth Proportional to 20,827.74, 28,742.19 and 11,267.64

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Solution

The fourth proportional to 20,827.74, 28,742.19 and 11,267.64 is: 15,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.74 : 28,742.19 = 11,267.64 : x
  2. Step 2: Convert to fraction form
    20,827.74/28,742.19 = 11,267.64/x
  3. Step 3: Cross multiply
    20,827.74x = 28,742.19 × 11,267.64
  4. Step 4: Simplify right side
    20,827.74x = 323,856,649.73
  5. Step 5: Solve for x
    x = 323,856,649.73/20,827.74
  6. Step 6: Final answer
    x = 15,549.29

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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.