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Finding the Fourth Proportional to 10,843.63, 14,963.79 and 6,128.01

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Solution

The fourth proportional to 10,843.63, 14,963.79 and 6,128.01 is: 8,456.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,843.63 : 14,963.79 = 6,128.01 : x
  2. Step 2: Convert to fraction form
    10,843.63/14,963.79 = 6,128.01/x
  3. Step 3: Cross multiply
    10,843.63x = 14,963.79 × 6,128.01
  4. Step 4: Simplify right side
    10,843.63x = 91,698,254.76
  5. Step 5: Solve for x
    x = 91,698,254.76/10,843.63
  6. Step 6: Final answer
    x = 8,456.42

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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.