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Finding the Fourth Proportional to 21,806.96, 32,721.44 and 9,959.44

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Solution

The fourth proportional to 21,806.96, 32,721.44 and 9,959.44 is: 14,944.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.96 : 32,721.44 = 9,959.44 : x
  2. Step 2: Convert to fraction form
    21,806.96/32,721.44 = 9,959.44/x
  3. Step 3: Cross multiply
    21,806.96x = 32,721.44 × 9,959.44
  4. Step 4: Simplify right side
    21,806.96x = 325,887,218.39
  5. Step 5: Solve for x
    x = 325,887,218.39/21,806.96
  6. Step 6: Final answer
    x = 14,944.18

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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.