Home / 16,121.18-22,245.72-12,772.28

Finding the Fourth Proportional to 16,121.18, 22,245.72 and 12,772.28

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Solution

The fourth proportional to 16,121.18, 22,245.72 and 12,772.28 is: 17,624.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,121.18 : 22,245.72 = 12,772.28 : x
  2. Step 2: Convert to fraction form
    16,121.18/22,245.72 = 12,772.28/x
  3. Step 3: Cross multiply
    16,121.18x = 22,245.72 × 12,772.28
  4. Step 4: Simplify right side
    16,121.18x = 284,128,564.64
  5. Step 5: Solve for x
    x = 284,128,564.64/16,121.18
  6. Step 6: Final answer
    x = 17,624.55

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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.