Home / 20,702.44-28,568.51-11,749.78

Finding the Fourth Proportional to 20,702.44, 28,568.51 and 11,749.78

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Solution

The fourth proportional to 20,702.44, 28,568.51 and 11,749.78 is: 16,214.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.44 : 28,568.51 = 11,749.78 : x
  2. Step 2: Convert to fraction form
    20,702.44/28,568.51 = 11,749.78/x
  3. Step 3: Cross multiply
    20,702.44x = 28,568.51 × 11,749.78
  4. Step 4: Simplify right side
    20,702.44x = 335,673,577.26
  5. Step 5: Solve for x
    x = 335,673,577.26/20,702.44
  6. Step 6: Final answer
    x = 16,214.21

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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.