Home / 20,413.52-30,571.68-14,179.76

Finding the Fourth Proportional to 20,413.52, 30,571.68 and 14,179.76

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Solution

The fourth proportional to 20,413.52, 30,571.68 and 14,179.76 is: 21,235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.52 : 30,571.68 = 14,179.76 : x
  2. Step 2: Convert to fraction form
    20,413.52/30,571.68 = 14,179.76/x
  3. Step 3: Cross multiply
    20,413.52x = 30,571.68 × 14,179.76
  4. Step 4: Simplify right side
    20,413.52x = 433,499,085.20
  5. Step 5: Solve for x
    x = 433,499,085.20/20,413.52
  6. Step 6: Final answer
    x = 21,235.88

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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.