Home / 10,286.20-15,431.70-3,713.08

Finding the Fourth Proportional to 10,286.20, 15,431.70 and 3,713.08

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Solution

The fourth proportional to 10,286.20, 15,431.70 and 3,713.08 is: 5,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,286.20 : 15,431.70 = 3,713.08 : x
  2. Step 2: Convert to fraction form
    10,286.20/15,431.70 = 3,713.08/x
  3. Step 3: Cross multiply
    10,286.20x = 15,431.70 × 3,713.08
  4. Step 4: Simplify right side
    10,286.20x = 57,299,136.64
  5. Step 5: Solve for x
    x = 57,299,136.64/10,286.20
  6. Step 6: Final answer
    x = 5,570.49

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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.