Home / 20,635.86-28,413.72-16,116.79

Finding the Fourth Proportional to 20,635.86, 28,413.72 and 16,116.79

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Solution

The fourth proportional to 20,635.86, 28,413.72 and 16,116.79 is: 22,191.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.86 : 28,413.72 = 16,116.79 : x
  2. Step 2: Convert to fraction form
    20,635.86/28,413.72 = 16,116.79/x
  3. Step 3: Cross multiply
    20,635.86x = 28,413.72 × 16,116.79
  4. Step 4: Simplify right side
    20,635.86x = 457,937,958.36
  5. Step 5: Solve for x
    x = 457,937,958.36/20,635.86
  6. Step 6: Final answer
    x = 22,191.37

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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.