Home / 28,442.08-39,249.79-15,695.38

Finding the Fourth Proportional to 28,442.08, 39,249.79 and 15,695.38

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Solution

The fourth proportional to 28,442.08, 39,249.79 and 15,695.38 is: 21,659.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.08 : 39,249.79 = 15,695.38 : x
  2. Step 2: Convert to fraction form
    28,442.08/39,249.79 = 15,695.38/x
  3. Step 3: Cross multiply
    28,442.08x = 39,249.79 × 15,695.38
  4. Step 4: Simplify right side
    28,442.08x = 616,040,368.97
  5. Step 5: Solve for x
    x = 616,040,368.97/28,442.08
  6. Step 6: Final answer
    x = 21,659.47

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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.