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Finding the Fourth Proportional to 16,721.30, 25,081.99 and 6,860.72

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Solution

The fourth proportional to 16,721.30, 25,081.99 and 6,860.72 is: 10,291.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,721.30 : 25,081.99 = 6,860.72 : x
  2. Step 2: Convert to fraction form
    16,721.30/25,081.99 = 6,860.72/x
  3. Step 3: Cross multiply
    16,721.30x = 25,081.99 × 6,860.72
  4. Step 4: Simplify right side
    16,721.30x = 172,080,367.87
  5. Step 5: Solve for x
    x = 172,080,367.87/16,721.30
  6. Step 6: Final answer
    x = 10,291.09

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1.5x scale

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.