Home / 20,560.20-30,840.30-7,413.90

Finding the Fourth Proportional to 20,560.20, 30,840.30 and 7,413.90

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Solution

The fourth proportional to 20,560.20, 30,840.30 and 7,413.90 is: 11,120.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.20 : 30,840.30 = 7,413.90 : x
  2. Step 2: Convert to fraction form
    20,560.20/30,840.30 = 7,413.90/x
  3. Step 3: Cross multiply
    20,560.20x = 30,840.30 × 7,413.90
  4. Step 4: Simplify right side
    20,560.20x = 228,646,900.17
  5. Step 5: Solve for x
    x = 228,646,900.17/20,560.20
  6. Step 6: Final answer
    x = 11,120.85

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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.