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Finding the Fourth Proportional to 12,843.66, 17,723.70 and 7,539.06

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Solution

The fourth proportional to 12,843.66, 17,723.70 and 7,539.06 is: 10,403.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,843.66 : 17,723.70 = 7,539.06 : x
  2. Step 2: Convert to fraction form
    12,843.66/17,723.70 = 7,539.06/x
  3. Step 3: Cross multiply
    12,843.66x = 17,723.70 × 7,539.06
  4. Step 4: Simplify right side
    12,843.66x = 133,620,037.72
  5. Step 5: Solve for x
    x = 133,620,037.72/12,843.66
  6. Step 6: Final answer
    x = 10,403.58

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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.