Home / 28,442.12-39,249.86-15,695.42

Finding the Fourth Proportional to 28,442.12, 39,249.86 and 15,695.42

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Solution

The fourth proportional to 28,442.12, 39,249.86 and 15,695.42 is: 21,659.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.12 : 39,249.86 = 15,695.42 : x
  2. Step 2: Convert to fraction form
    28,442.12/39,249.86 = 15,695.42/x
  3. Step 3: Cross multiply
    28,442.12x = 39,249.86 × 15,695.42
  4. Step 4: Simplify right side
    28,442.12x = 616,043,027.84
  5. Step 5: Solve for x
    x = 616,043,027.84/28,442.12
  6. Step 6: Final answer
    x = 21,659.53

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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.