Home / 11,949.43-16,490-6,644.13

Finding the Fourth Proportional to 11,949.43, 16,490 and 6,644.13

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Solution

The fourth proportional to 11,949.43, 16,490 and 6,644.13 is: 9,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.43 : 16,490 = 6,644.13 : x
  2. Step 2: Convert to fraction form
    11,949.43/16,490 = 6,644.13/x
  3. Step 3: Cross multiply
    11,949.43x = 16,490 × 6,644.13
  4. Step 4: Simplify right side
    11,949.43x = 109,561,703.70
  5. Step 5: Solve for x
    x = 109,561,703.70/11,949.43
  6. Step 6: Final answer
    x = 9,168.78

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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.