Home / 11,949.78-16,490.72-6,644.61

Finding the Fourth Proportional to 11,949.78, 16,490.72 and 6,644.61

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Solution

The fourth proportional to 11,949.78, 16,490.72 and 6,644.61 is: 9,169.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.78 : 16,490.72 = 6,644.61 : x
  2. Step 2: Convert to fraction form
    11,949.78/16,490.72 = 6,644.61/x
  3. Step 3: Cross multiply
    11,949.78x = 16,490.72 × 6,644.61
  4. Step 4: Simplify right side
    11,949.78x = 109,574,419.63
  5. Step 5: Solve for x
    x = 109,574,419.63/11,949.78
  6. Step 6: Final answer
    x = 9,169.57

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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.