Home / 19,982.98-27,577.34-11,487.78

Finding the Fourth Proportional to 19,982.98, 27,577.34 and 11,487.78

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Solution

The fourth proportional to 19,982.98, 27,577.34 and 11,487.78 is: 15,853.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.98 : 27,577.34 = 11,487.78 : x
  2. Step 2: Convert to fraction form
    19,982.98/27,577.34 = 11,487.78/x
  3. Step 3: Cross multiply
    19,982.98x = 27,577.34 × 11,487.78
  4. Step 4: Simplify right side
    19,982.98x = 316,802,414.91
  5. Step 5: Solve for x
    x = 316,802,414.91/19,982.98
  6. Step 6: Final answer
    x = 15,853.61

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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.