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Finding the Fourth Proportional to 12,357.55, 18,536.73 and 3,591.73

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Solution

The fourth proportional to 12,357.55, 18,536.73 and 3,591.73 is: 5,387.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.55 : 18,536.73 = 3,591.73 : x
  2. Step 2: Convert to fraction form
    12,357.55/18,536.73 = 3,591.73/x
  3. Step 3: Cross multiply
    12,357.55x = 18,536.73 × 3,591.73
  4. Step 4: Simplify right side
    12,357.55x = 66,578,929.24
  5. Step 5: Solve for x
    x = 66,578,929.24/12,357.55
  6. Step 6: Final answer
    x = 5,387.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.