Home / 13,610.42-20,413.20-8,665.37

Finding the Fourth Proportional to 13,610.42, 20,413.20 and 8,665.37

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Solution

The fourth proportional to 13,610.42, 20,413.20 and 8,665.37 is: 12,996.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.42 : 20,413.20 = 8,665.37 : x
  2. Step 2: Convert to fraction form
    13,610.42/20,413.20 = 8,665.37/x
  3. Step 3: Cross multiply
    13,610.42x = 20,413.20 × 8,665.37
  4. Step 4: Simplify right side
    13,610.42x = 176,887,930.88
  5. Step 5: Solve for x
    x = 176,887,930.88/13,610.42
  6. Step 6: Final answer
    x = 12,996.51

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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.