Home / 11,681.28-16,115.76-7,491.96

Finding the Fourth Proportional to 11,681.28, 16,115.76 and 7,491.96

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Solution

The fourth proportional to 11,681.28, 16,115.76 and 7,491.96 is: 10,336.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.28 : 16,115.76 = 7,491.96 : x
  2. Step 2: Convert to fraction form
    11,681.28/16,115.76 = 7,491.96/x
  3. Step 3: Cross multiply
    11,681.28x = 16,115.76 × 7,491.96
  4. Step 4: Simplify right side
    11,681.28x = 120,738,629.29
  5. Step 5: Solve for x
    x = 120,738,629.29/11,681.28
  6. Step 6: Final answer
    x = 10,336.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.