Home / 16,979.78-25,472.46-5,290.64

Finding the Fourth Proportional to 16,979.78, 25,472.46 and 5,290.64

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Solution

The fourth proportional to 16,979.78, 25,472.46 and 5,290.64 is: 7,936.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,979.78 : 25,472.46 = 5,290.64 : x
  2. Step 2: Convert to fraction form
    16,979.78/25,472.46 = 5,290.64/x
  3. Step 3: Cross multiply
    16,979.78x = 25,472.46 × 5,290.64
  4. Step 4: Simplify right side
    16,979.78x = 134,765,615.77
  5. Step 5: Solve for x
    x = 134,765,615.77/16,979.78
  6. Step 6: Final answer
    x = 7,936.83

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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.