Home / 11,491.74-15,858.38-6,455.97

Finding the Fourth Proportional to 11,491.74, 15,858.38 and 6,455.97

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Solution

The fourth proportional to 11,491.74, 15,858.38 and 6,455.97 is: 8,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,491.74 : 15,858.38 = 6,455.97 : x
  2. Step 2: Convert to fraction form
    11,491.74/15,858.38 = 6,455.97/x
  3. Step 3: Cross multiply
    11,491.74x = 15,858.38 × 6,455.97
  4. Step 4: Simplify right side
    11,491.74x = 102,381,241.67
  5. Step 5: Solve for x
    x = 102,381,241.67/11,491.74
  6. Step 6: Final answer
    x = 8,909.12

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1.5x scale

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.