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Finding the Fourth Proportional to 11,086.99, 15,287.46 and 8,259.28

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Solution

The fourth proportional to 11,086.99, 15,287.46 and 8,259.28 is: 11,388.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,086.99 : 15,287.46 = 8,259.28 : x
  2. Step 2: Convert to fraction form
    11,086.99/15,287.46 = 8,259.28/x
  3. Step 3: Cross multiply
    11,086.99x = 15,287.46 × 8,259.28
  4. Step 4: Simplify right side
    11,086.99x = 126,263,412.63
  5. Step 5: Solve for x
    x = 126,263,412.63/11,086.99
  6. Step 6: Final answer
    x = 11,388.43

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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.