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Finding the Fourth Proportional to 10,843.88, 14,966.60 and 6,128.16

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Solution

The fourth proportional to 10,843.88, 14,966.60 and 6,128.16 is: 8,458.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,843.88 : 14,966.60 = 6,128.16 : x
  2. Step 2: Convert to fraction form
    10,843.88/14,966.60 = 6,128.16/x
  3. Step 3: Cross multiply
    10,843.88x = 14,966.60 × 6,128.16
  4. Step 4: Simplify right side
    10,843.88x = 91,717,649.93
  5. Step 5: Solve for x
    x = 91,717,649.93/10,843.88
  6. Step 6: Final answer
    x = 8,458.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.