Home / 27,678.52-38,198.58-15,745.48

Finding the Fourth Proportional to 27,678.52, 38,198.58 and 15,745.48

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Solution

The fourth proportional to 27,678.52, 38,198.58 and 15,745.48 is: 21,730.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,678.52 : 38,198.58 = 15,745.48 : x
  2. Step 2: Convert to fraction form
    27,678.52/38,198.58 = 15,745.48/x
  3. Step 3: Cross multiply
    27,678.52x = 38,198.58 × 15,745.48
  4. Step 4: Simplify right side
    27,678.52x = 601,454,977.42
  5. Step 5: Solve for x
    x = 601,454,977.42/27,678.52
  6. Step 6: Final answer
    x = 21,730.03

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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.