Home / 11,939.48-16,476.78-6,634.80

Finding the Fourth Proportional to 11,939.48, 16,476.78 and 6,634.80

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Solution

The fourth proportional to 11,939.48, 16,476.78 and 6,634.80 is: 9,156.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.48 : 16,476.78 = 6,634.80 : x
  2. Step 2: Convert to fraction form
    11,939.48/16,476.78 = 6,634.80/x
  3. Step 3: Cross multiply
    11,939.48x = 16,476.78 × 6,634.80
  4. Step 4: Simplify right side
    11,939.48x = 109,320,139.94
  5. Step 5: Solve for x
    x = 109,320,139.94/11,939.48
  6. Step 6: Final answer
    x = 9,156.19

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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.