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Finding the Fourth Proportional to 13,229.88, 19,841.94 and 6,649.08

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Solution

The fourth proportional to 13,229.88, 19,841.94 and 6,649.08 is: 9,972.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,229.88 : 19,841.94 = 6,649.08 : x
  2. Step 2: Convert to fraction form
    13,229.88/19,841.94 = 6,649.08/x
  3. Step 3: Cross multiply
    13,229.88x = 19,841.94 × 6,649.08
  4. Step 4: Simplify right side
    13,229.88x = 131,930,646.42
  5. Step 5: Solve for x
    x = 131,930,646.42/13,229.88
  6. Step 6: Final answer
    x = 9,972.17

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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.