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Finding the Fourth Proportional to 9,885.48, 13,623.12 and 7,086.12

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Solution

The fourth proportional to 9,885.48, 13,623.12 and 7,086.12 is: 9,765.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.48 : 13,623.12 = 7,086.12 : x
  2. Step 2: Convert to fraction form
    9,885.48/13,623.12 = 7,086.12/x
  3. Step 3: Cross multiply
    9,885.48x = 13,623.12 × 7,086.12
  4. Step 4: Simplify right side
    9,885.48x = 96,535,063.09
  5. Step 5: Solve for x
    x = 96,535,063.09/9,885.48
  6. Step 6: Final answer
    x = 9,765.34

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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.