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Finding the Fourth Proportional to 21,842.49, 32,755.42 and 7,799.91

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Solution

The fourth proportional to 21,842.49, 32,755.42 and 7,799.91 is: 11,696.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,842.49 : 32,755.42 = 7,799.91 : x
  2. Step 2: Convert to fraction form
    21,842.49/32,755.42 = 7,799.91/x
  3. Step 3: Cross multiply
    21,842.49x = 32,755.42 × 7,799.91
  4. Step 4: Simplify right side
    21,842.49x = 255,489,328.01
  5. Step 5: Solve for x
    x = 255,489,328.01/21,842.49
  6. Step 6: Final answer
    x = 11,696.90

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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.