Home / 20,799.87-28,702.83-11,368.44

Finding the Fourth Proportional to 20,799.87, 28,702.83 and 11,368.44

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Solution

The fourth proportional to 20,799.87, 28,702.83 and 11,368.44 is: 15,687.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.87 : 28,702.83 = 11,368.44 : x
  2. Step 2: Convert to fraction form
    20,799.87/28,702.83 = 11,368.44/x
  3. Step 3: Cross multiply
    20,799.87x = 28,702.83 × 11,368.44
  4. Step 4: Simplify right side
    20,799.87x = 326,306,400.69
  5. Step 5: Solve for x
    x = 326,306,400.69/20,799.87
  6. Step 6: Final answer
    x = 15,687.91

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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.