Home / 20,613.40-28,413.30-16,129.96

Finding the Fourth Proportional to 20,613.40, 28,413.30 and 16,129.96

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Solution

The fourth proportional to 20,613.40, 28,413.30 and 16,129.96 is: 22,233.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.40 : 28,413.30 = 16,129.96 : x
  2. Step 2: Convert to fraction form
    20,613.40/28,413.30 = 16,129.96/x
  3. Step 3: Cross multiply
    20,613.40x = 28,413.30 × 16,129.96
  4. Step 4: Simplify right side
    20,613.40x = 458,305,392.47
  5. Step 5: Solve for x
    x = 458,305,392.47/20,613.40
  6. Step 6: Final answer
    x = 22,233.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.