Home / 11,157.84-15,418.20-8,127.69

Finding the Fourth Proportional to 11,157.84, 15,418.20 and 8,127.69

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Solution

The fourth proportional to 11,157.84, 15,418.20 and 8,127.69 is: 11,231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.84 : 15,418.20 = 8,127.69 : x
  2. Step 2: Convert to fraction form
    11,157.84/15,418.20 = 8,127.69/x
  3. Step 3: Cross multiply
    11,157.84x = 15,418.20 × 8,127.69
  4. Step 4: Simplify right side
    11,157.84x = 125,314,349.96
  5. Step 5: Solve for x
    x = 125,314,349.96/11,157.84
  6. Step 6: Final answer
    x = 11,231.05

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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.