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Finding the Fourth Proportional to 18,128.28, 27,177.78 and 7,029.24

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Solution

The fourth proportional to 18,128.28, 27,177.78 and 7,029.24 is: 10,538.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.28 : 27,177.78 = 7,029.24 : x
  2. Step 2: Convert to fraction form
    18,128.28/27,177.78 = 7,029.24/x
  3. Step 3: Cross multiply
    18,128.28x = 27,177.78 × 7,029.24
  4. Step 4: Simplify right side
    18,128.28x = 191,039,138.29
  5. Step 5: Solve for x
    x = 191,039,138.29/18,128.28
  6. Step 6: Final answer
    x = 10,538.18

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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.