Home / 20,798.88-28,702.66-11,367.64

Finding the Fourth Proportional to 20,798.88, 28,702.66 and 11,367.64

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Solution

The fourth proportional to 20,798.88, 28,702.66 and 11,367.64 is: 15,687.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.88 : 28,702.66 = 11,367.64 : x
  2. Step 2: Convert to fraction form
    20,798.88/28,702.66 = 11,367.64/x
  3. Step 3: Cross multiply
    20,798.88x = 28,702.66 × 11,367.64
  4. Step 4: Simplify right side
    20,798.88x = 326,281,505.92
  5. Step 5: Solve for x
    x = 326,281,505.92/20,798.88
  6. Step 6: Final answer
    x = 15,687.46

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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.