Home / 10,156.78-15,237.58-3,231.28

Finding the Fourth Proportional to 10,156.78, 15,237.58 and 3,231.28

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Solution

The fourth proportional to 10,156.78, 15,237.58 and 3,231.28 is: 4,847.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,156.78 : 15,237.58 = 3,231.28 : x
  2. Step 2: Convert to fraction form
    10,156.78/15,237.58 = 3,231.28/x
  3. Step 3: Cross multiply
    10,156.78x = 15,237.58 × 3,231.28
  4. Step 4: Simplify right side
    10,156.78x = 49,236,887.50
  5. Step 5: Solve for x
    x = 49,236,887.50/10,156.78
  6. Step 6: Final answer
    x = 4,847.69

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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.