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Finding the Fourth Proportional to 11,079.99, 16,619.99 and 6,459.75

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Solution

The fourth proportional to 11,079.99, 16,619.99 and 6,459.75 is: 9,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,079.99 : 16,619.99 = 6,459.75 : x
  2. Step 2: Convert to fraction form
    11,079.99/16,619.99 = 6,459.75/x
  3. Step 3: Cross multiply
    11,079.99x = 16,619.99 × 6,459.75
  4. Step 4: Simplify right side
    11,079.99x = 107,360,948.10
  5. Step 5: Solve for x
    x = 107,360,948.10/11,079.99
  6. Step 6: Final answer
    x = 9,689.63

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.