Home / 20,279.22-30,418.80-6,427.14

Finding the Fourth Proportional to 20,279.22, 30,418.80 and 6,427.14

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Solution

The fourth proportional to 20,279.22, 30,418.80 and 6,427.14 is: 9,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.22 : 30,418.80 = 6,427.14 : x
  2. Step 2: Convert to fraction form
    20,279.22/30,418.80 = 6,427.14/x
  3. Step 3: Cross multiply
    20,279.22x = 30,418.80 × 6,427.14
  4. Step 4: Simplify right side
    20,279.22x = 195,505,886.23
  5. Step 5: Solve for x
    x = 195,505,886.23/20,279.22
  6. Step 6: Final answer
    x = 9,640.70

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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.