Home / 22,128.64-30,537.52-12,192.64

Finding the Fourth Proportional to 22,128.64, 30,537.52 and 12,192.64

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Solution

The fourth proportional to 22,128.64, 30,537.52 and 12,192.64 is: 16,825.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,128.64 : 30,537.52 = 12,192.64 : x
  2. Step 2: Convert to fraction form
    22,128.64/30,537.52 = 12,192.64/x
  3. Step 3: Cross multiply
    22,128.64x = 30,537.52 × 12,192.64
  4. Step 4: Simplify right side
    22,128.64x = 372,332,987.85
  5. Step 5: Solve for x
    x = 372,332,987.85/22,128.64
  6. Step 6: Final answer
    x = 16,825.84

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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.