Home / 20,128.52-27,772.35-12,063.45

Finding the Fourth Proportional to 20,128.52, 27,772.35 and 12,063.45

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Solution

The fourth proportional to 20,128.52, 27,772.35 and 12,063.45 is: 16,644.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.52 : 27,772.35 = 12,063.45 : x
  2. Step 2: Convert to fraction form
    20,128.52/27,772.35 = 12,063.45/x
  3. Step 3: Cross multiply
    20,128.52x = 27,772.35 × 12,063.45
  4. Step 4: Simplify right side
    20,128.52x = 335,030,414.52
  5. Step 5: Solve for x
    x = 335,030,414.52/20,128.52
  6. Step 6: Final answer
    x = 16,644.56

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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.