Home / 30,413.20-41,981.52-22,519.12

Finding the Fourth Proportional to 30,413.20, 41,981.52 and 22,519.12

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Solution

The fourth proportional to 30,413.20, 41,981.52 and 22,519.12 is: 31,084.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,413.20 : 41,981.52 = 22,519.12 : x
  2. Step 2: Convert to fraction form
    30,413.20/41,981.52 = 22,519.12/x
  3. Step 3: Cross multiply
    30,413.20x = 41,981.52 × 22,519.12
  4. Step 4: Simplify right side
    30,413.20x = 945,386,886.66
  5. Step 5: Solve for x
    x = 945,386,886.66/30,413.20
  6. Step 6: Final answer
    x = 31,084.76

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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.