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Finding the Fourth Proportional to 16,391.04, 22,619.52 and 8,939.20

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Solution

The fourth proportional to 16,391.04, 22,619.52 and 8,939.20 is: 12,336.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,391.04 : 22,619.52 = 8,939.20 : x
  2. Step 2: Convert to fraction form
    16,391.04/22,619.52 = 8,939.20/x
  3. Step 3: Cross multiply
    16,391.04x = 22,619.52 × 8,939.20
  4. Step 4: Simplify right side
    16,391.04x = 202,200,413.18
  5. Step 5: Solve for x
    x = 202,200,413.18/16,391.04
  6. Step 6: Final answer
    x = 12,336.03

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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.