Home / 19,677.06-29,515.32-11,781.78

Finding the Fourth Proportional to 19,677.06, 29,515.32 and 11,781.78

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Solution

The fourth proportional to 19,677.06, 29,515.32 and 11,781.78 is: 17,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,677.06 : 29,515.32 = 11,781.78 : x
  2. Step 2: Convert to fraction form
    19,677.06/29,515.32 = 11,781.78/x
  3. Step 3: Cross multiply
    19,677.06x = 29,515.32 × 11,781.78
  4. Step 4: Simplify right side
    19,677.06x = 347,743,006.87
  5. Step 5: Solve for x
    x = 347,743,006.87/19,677.06
  6. Step 6: Final answer
    x = 17,672.51

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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.