Home / 10,491.13-15,731.83-3,912.58

Finding the Fourth Proportional to 10,491.13, 15,731.83 and 3,912.58

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Solution

The fourth proportional to 10,491.13, 15,731.83 and 3,912.58 is: 5,867.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.13 : 15,731.83 = 3,912.58 : x
  2. Step 2: Convert to fraction form
    10,491.13/15,731.83 = 3,912.58/x
  3. Step 3: Cross multiply
    10,491.13x = 15,731.83 × 3,912.58
  4. Step 4: Simplify right side
    10,491.13x = 61,552,043.42
  5. Step 5: Solve for x
    x = 61,552,043.42/10,491.13
  6. Step 6: Final answer
    x = 5,867.06

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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.