Home / 12,357.10-18,538.38-3,591.28

Finding the Fourth Proportional to 12,357.10, 18,538.38 and 3,591.28

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Solution

The fourth proportional to 12,357.10, 18,538.38 and 3,591.28 is: 5,387.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.10 : 18,538.38 = 3,591.28 : x
  2. Step 2: Convert to fraction form
    12,357.10/18,538.38 = 3,591.28/x
  3. Step 3: Cross multiply
    12,357.10x = 18,538.38 × 3,591.28
  4. Step 4: Simplify right side
    12,357.10x = 66,576,466.98
  5. Step 5: Solve for x
    x = 66,576,466.98/12,357.10
  6. Step 6: Final answer
    x = 5,387.71

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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.