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Finding the Fourth Proportional to 13,086.55, 18,056.28 and 8,846.20

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Solution

The fourth proportional to 13,086.55, 18,056.28 and 8,846.20 is: 12,205.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.55 : 18,056.28 = 8,846.20 : x
  2. Step 2: Convert to fraction form
    13,086.55/18,056.28 = 8,846.20/x
  3. Step 3: Cross multiply
    13,086.55x = 18,056.28 × 8,846.20
  4. Step 4: Simplify right side
    13,086.55x = 159,729,464.14
  5. Step 5: Solve for x
    x = 159,729,464.14/13,086.55
  6. Step 6: Final answer
    x = 12,205.62

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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.