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Finding the Fourth Proportional to 12,844.94, 17,728.03 and 7,810.74

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Solution

The fourth proportional to 12,844.94, 17,728.03 and 7,810.74 is: 10,780.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,844.94 : 17,728.03 = 7,810.74 : x
  2. Step 2: Convert to fraction form
    12,844.94/17,728.03 = 7,810.74/x
  3. Step 3: Cross multiply
    12,844.94x = 17,728.03 × 7,810.74
  4. Step 4: Simplify right side
    12,844.94x = 138,469,034.78
  5. Step 5: Solve for x
    x = 138,469,034.78/12,844.94
  6. Step 6: Final answer
    x = 10,780.04

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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.