Home / 10,103.91-15,158.25-3,178.41

Finding the Fourth Proportional to 10,103.91, 15,158.25 and 3,178.41

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Solution

The fourth proportional to 10,103.91, 15,158.25 and 3,178.41 is: 4,768.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,103.91 : 15,158.25 = 3,178.41 : x
  2. Step 2: Convert to fraction form
    10,103.91/15,158.25 = 3,178.41/x
  3. Step 3: Cross multiply
    10,103.91x = 15,158.25 × 3,178.41
  4. Step 4: Simplify right side
    10,103.91x = 48,179,133.38
  5. Step 5: Solve for x
    x = 48,179,133.38/10,103.91
  6. Step 6: Final answer
    x = 4,768.37

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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.