Home / 28,425.91-39,231.52-16,486.78

Finding the Fourth Proportional to 28,425.91, 39,231.52 and 16,486.78

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Solution

The fourth proportional to 28,425.91, 39,231.52 and 16,486.78 is: 22,753.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.91 : 39,231.52 = 16,486.78 : x
  2. Step 2: Convert to fraction form
    28,425.91/39,231.52 = 16,486.78/x
  3. Step 3: Cross multiply
    28,425.91x = 39,231.52 × 16,486.78
  4. Step 4: Simplify right side
    28,425.91x = 646,801,243.15
  5. Step 5: Solve for x
    x = 646,801,243.15/28,425.91
  6. Step 6: Final answer
    x = 22,753.94

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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.