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Finding the Fourth Proportional to 14,963.88, 20,649.21 and 8,249.13

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Solution

The fourth proportional to 14,963.88, 20,649.21 and 8,249.13 is: 11,383.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,963.88 : 20,649.21 = 8,249.13 : x
  2. Step 2: Convert to fraction form
    14,963.88/20,649.21 = 8,249.13/x
  3. Step 3: Cross multiply
    14,963.88x = 20,649.21 × 8,249.13
  4. Step 4: Simplify right side
    14,963.88x = 170,338,017.69
  5. Step 5: Solve for x
    x = 170,338,017.69/14,963.88
  6. Step 6: Final answer
    x = 11,383.28

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Double scale
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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.