Home / 20,279.20-30,413.40-6,239.20

Finding the Fourth Proportional to 20,279.20, 30,413.40 and 6,239.20

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Solution

The fourth proportional to 20,279.20, 30,413.40 and 6,239.20 is: 9,357.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.20 : 30,413.40 = 6,239.20 : x
  2. Step 2: Convert to fraction form
    20,279.20/30,413.40 = 6,239.20/x
  3. Step 3: Cross multiply
    20,279.20x = 30,413.40 × 6,239.20
  4. Step 4: Simplify right side
    20,279.20x = 189,755,285.28
  5. Step 5: Solve for x
    x = 189,755,285.28/20,279.20
  6. Step 6: Final answer
    x = 9,357.14

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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.