Home / 20,413.13-30,621.63-7,934.12

Finding the Fourth Proportional to 20,413.13, 30,621.63 and 7,934.12

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Solution

The fourth proportional to 20,413.13, 30,621.63 and 7,934.12 is: 11,901.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.13 : 30,621.63 = 7,934.12 : x
  2. Step 2: Convert to fraction form
    20,413.13/30,621.63 = 7,934.12/x
  3. Step 3: Cross multiply
    20,413.13x = 30,621.63 × 7,934.12
  4. Step 4: Simplify right side
    20,413.13x = 242,955,633.86
  5. Step 5: Solve for x
    x = 242,955,633.86/20,413.13
  6. Step 6: Final answer
    x = 11,901.93

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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.