Home / 20,799.19-28,702.88-11,367.75

Finding the Fourth Proportional to 20,799.19, 28,702.88 and 11,367.75

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Solution

The fourth proportional to 20,799.19, 28,702.88 and 11,367.75 is: 15,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.19 : 28,702.88 = 11,367.75 : x
  2. Step 2: Convert to fraction form
    20,799.19/28,702.88 = 11,367.75/x
  3. Step 3: Cross multiply
    20,799.19x = 28,702.88 × 11,367.75
  4. Step 4: Simplify right side
    20,799.19x = 326,287,164.12
  5. Step 5: Solve for x
    x = 326,287,164.12/20,799.19
  6. Step 6: Final answer
    x = 15,687.49

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1.5x scale

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.