Home / 20,799.14-28,702.80-11,847.47

Finding the Fourth Proportional to 20,799.14, 28,702.80 and 11,847.47

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Solution

The fourth proportional to 20,799.14, 28,702.80 and 11,847.47 is: 16,349.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.14 : 28,702.80 = 11,847.47 : x
  2. Step 2: Convert to fraction form
    20,799.14/28,702.80 = 11,847.47/x
  3. Step 3: Cross multiply
    20,799.14x = 28,702.80 × 11,847.47
  4. Step 4: Simplify right side
    20,799.14x = 340,055,418.40
  5. Step 5: Solve for x
    x = 340,055,418.40/20,799.14
  6. Step 6: Final answer
    x = 16,349.50

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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.