Home / 20,702.14-30,979.32-17,938.27

Finding the Fourth Proportional to 20,702.14, 30,979.32 and 17,938.27

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Solution

The fourth proportional to 20,702.14, 30,979.32 and 17,938.27 is: 26,843.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.14 : 30,979.32 = 17,938.27 : x
  2. Step 2: Convert to fraction form
    20,702.14/30,979.32 = 17,938.27/x
  3. Step 3: Cross multiply
    20,702.14x = 30,979.32 × 17,938.27
  4. Step 4: Simplify right side
    20,702.14x = 555,715,406.58
  5. Step 5: Solve for x
    x = 555,715,406.58/20,702.14
  6. Step 6: Final answer
    x = 26,843.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.