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Finding the Fourth Proportional to 15,081.22, 20,813.02 and 8,708.99

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Solution

The fourth proportional to 15,081.22, 20,813.02 and 8,708.99 is: 12,018.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.22 : 20,813.02 = 8,708.99 : x
  2. Step 2: Convert to fraction form
    15,081.22/20,813.02 = 8,708.99/x
  3. Step 3: Cross multiply
    15,081.22x = 20,813.02 × 8,708.99
  4. Step 4: Simplify right side
    15,081.22x = 181,260,413.31
  5. Step 5: Solve for x
    x = 181,260,413.31/15,081.22
  6. Step 6: Final answer
    x = 12,018.95

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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.