Home / 10,305.40-15,419.82-6,147.72

Finding the Fourth Proportional to 10,305.40, 15,419.82 and 6,147.72

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Solution

The fourth proportional to 10,305.40, 15,419.82 and 6,147.72 is: 9,198.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,305.40 : 15,419.82 = 6,147.72 : x
  2. Step 2: Convert to fraction form
    10,305.40/15,419.82 = 6,147.72/x
  3. Step 3: Cross multiply
    10,305.40x = 15,419.82 × 6,147.72
  4. Step 4: Simplify right side
    10,305.40x = 94,796,735.81
  5. Step 5: Solve for x
    x = 94,796,735.81/10,305.40
  6. Step 6: Final answer
    x = 9,198.74

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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.