Home / 10,087.28-15,133.35-3,161.78

Finding the Fourth Proportional to 10,087.28, 15,133.35 and 3,161.78

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Solution

The fourth proportional to 10,087.28, 15,133.35 and 3,161.78 is: 4,743.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,087.28 : 15,133.35 = 3,161.78 : x
  2. Step 2: Convert to fraction form
    10,087.28/15,133.35 = 3,161.78/x
  3. Step 3: Cross multiply
    10,087.28x = 15,133.35 × 3,161.78
  4. Step 4: Simplify right side
    10,087.28x = 47,848,369.10
  5. Step 5: Solve for x
    x = 47,848,369.10/10,087.28
  6. Step 6: Final answer
    x = 4,743.44

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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.