Home / 20,396.52-30,544.02-12,979.08

Finding the Fourth Proportional to 20,396.52, 30,544.02 and 12,979.08

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Solution

The fourth proportional to 20,396.52, 30,544.02 and 12,979.08 is: 19,436.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.52 : 30,544.02 = 12,979.08 : x
  2. Step 2: Convert to fraction form
    20,396.52/30,544.02 = 12,979.08/x
  3. Step 3: Cross multiply
    20,396.52x = 30,544.02 × 12,979.08
  4. Step 4: Simplify right side
    20,396.52x = 396,433,279.10
  5. Step 5: Solve for x
    x = 396,433,279.10/20,396.52
  6. Step 6: Final answer
    x = 19,436.32

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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.