Home / 20,799.13-28,702.79-11,367.69

Finding the Fourth Proportional to 20,799.13, 28,702.79 and 11,367.69

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Solution

The fourth proportional to 20,799.13, 28,702.79 and 11,367.69 is: 15,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.13 : 28,702.79 = 11,367.69 : x
  2. Step 2: Convert to fraction form
    20,799.13/28,702.79 = 11,367.69/x
  3. Step 3: Cross multiply
    20,799.13x = 28,702.79 × 11,367.69
  4. Step 4: Simplify right side
    20,799.13x = 326,284,458.46
  5. Step 5: Solve for x
    x = 326,284,458.46/20,799.13
  6. Step 6: Final answer
    x = 15,687.41

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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.