Home / 11,491.99-15,858.34-6,456.42

Finding the Fourth Proportional to 11,491.99, 15,858.34 and 6,456.42

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Solution

The fourth proportional to 11,491.99, 15,858.34 and 6,456.42 is: 8,909.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,491.99 : 15,858.34 = 6,456.42 : x
  2. Step 2: Convert to fraction form
    11,491.99/15,858.34 = 6,456.42/x
  3. Step 3: Cross multiply
    11,491.99x = 15,858.34 × 6,456.42
  4. Step 4: Simplify right side
    11,491.99x = 102,388,087.40
  5. Step 5: Solve for x
    x = 102,388,087.40/11,491.99
  6. Step 6: Final answer
    x = 8,909.52

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Half scale
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Double scale
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Similar ratio
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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.