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Finding the Fourth Proportional to 15,843.44, 21,866.26 and 9,127.76

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Solution

The fourth proportional to 15,843.44, 21,866.26 and 9,127.76 is: 12,597.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,843.44 : 21,866.26 = 9,127.76 : x
  2. Step 2: Convert to fraction form
    15,843.44/21,866.26 = 9,127.76/x
  3. Step 3: Cross multiply
    15,843.44x = 21,866.26 × 9,127.76
  4. Step 4: Simplify right side
    15,843.44x = 199,589,973.38
  5. Step 5: Solve for x
    x = 199,589,973.38/15,843.44
  6. Step 6: Final answer
    x = 12,597.64

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Double scale
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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.