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Finding the Fourth Proportional to 9,559.68, 13,196.46 and 8,961.90

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Solution

The fourth proportional to 9,559.68, 13,196.46 and 8,961.90 is: 12,371.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,559.68 : 13,196.46 = 8,961.90 : x
  2. Step 2: Convert to fraction form
    9,559.68/13,196.46 = 8,961.90/x
  3. Step 3: Cross multiply
    9,559.68x = 13,196.46 × 8,961.90
  4. Step 4: Simplify right side
    9,559.68x = 118,265,354.87
  5. Step 5: Solve for x
    x = 118,265,354.87/9,559.68
  6. Step 6: Final answer
    x = 12,371.27

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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.