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Finding the Fourth Proportional to 16,843.78, 25,274.81 and 6,989.82

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Solution

The fourth proportional to 16,843.78, 25,274.81 and 6,989.82 is: 10,488.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,843.78 : 25,274.81 = 6,989.82 : x
  2. Step 2: Convert to fraction form
    16,843.78/25,274.81 = 6,989.82/x
  3. Step 3: Cross multiply
    16,843.78x = 25,274.81 × 6,989.82
  4. Step 4: Simplify right side
    16,843.78x = 176,666,372.43
  5. Step 5: Solve for x
    x = 176,666,372.43/16,843.78
  6. Step 6: Final answer
    x = 10,488.52

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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.