Home / 16,840.80-25,222.20-8,391.92

Finding the Fourth Proportional to 16,840.80, 25,222.20 and 8,391.92

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Solution

The fourth proportional to 16,840.80, 25,222.20 and 8,391.92 is: 12,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,840.80 : 25,222.20 = 8,391.92 : x
  2. Step 2: Convert to fraction form
    16,840.80/25,222.20 = 8,391.92/x
  3. Step 3: Cross multiply
    16,840.80x = 25,222.20 × 8,391.92
  4. Step 4: Simplify right side
    16,840.80x = 211,662,684.62
  5. Step 5: Solve for x
    x = 211,662,684.62/16,840.80
  6. Step 6: Final answer
    x = 12,568.45

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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.