Home / 20,702.28-28,568.37-11,270.64

Finding the Fourth Proportional to 20,702.28, 28,568.37 and 11,270.64

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Solution

The fourth proportional to 20,702.28, 28,568.37 and 11,270.64 is: 15,553.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.28 : 28,568.37 = 11,270.64 : x
  2. Step 2: Convert to fraction form
    20,702.28/28,568.37 = 11,270.64/x
  3. Step 3: Cross multiply
    20,702.28x = 28,568.37 × 11,270.64
  4. Step 4: Simplify right side
    20,702.28x = 321,983,813.66
  5. Step 5: Solve for x
    x = 321,983,813.66/20,702.28
  6. Step 6: Final answer
    x = 15,553.06

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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.