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Finding the Fourth Proportional to 12,795.12, 17,657.64 and 7,489.44

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Solution

The fourth proportional to 12,795.12, 17,657.64 and 7,489.44 is: 10,335.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.12 : 17,657.64 = 7,489.44 : x
  2. Step 2: Convert to fraction form
    12,795.12/17,657.64 = 7,489.44/x
  3. Step 3: Cross multiply
    12,795.12x = 17,657.64 × 7,489.44
  4. Step 4: Simplify right side
    12,795.12x = 132,245,835.32
  5. Step 5: Solve for x
    x = 132,245,835.32/12,795.12
  6. Step 6: Final answer
    x = 10,335.65

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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.