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Finding the Fourth Proportional to 19,999.84, 27,590.88 and 11,611.48

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Solution

The fourth proportional to 19,999.84, 27,590.88 and 11,611.48 is: 16,018.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.84 : 27,590.88 = 11,611.48 : x
  2. Step 2: Convert to fraction form
    19,999.84/27,590.88 = 11,611.48/x
  3. Step 3: Cross multiply
    19,999.84x = 27,590.88 × 11,611.48
  4. Step 4: Simplify right side
    19,999.84x = 320,370,951.30
  5. Step 5: Solve for x
    x = 320,370,951.30/19,999.84
  6. Step 6: Final answer
    x = 16,018.68

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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.