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Finding the Fourth Proportional to 9,155.48, 13,615.44 and 8,863.88

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Solution

The fourth proportional to 9,155.48, 13,615.44 and 8,863.88 is: 13,181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,155.48 : 13,615.44 = 8,863.88 : x
  2. Step 2: Convert to fraction form
    9,155.48/13,615.44 = 8,863.88/x
  3. Step 3: Cross multiply
    9,155.48x = 13,615.44 × 8,863.88
  4. Step 4: Simplify right side
    9,155.48x = 120,685,626.31
  5. Step 5: Solve for x
    x = 120,685,626.31/9,155.48
  6. Step 6: Final answer
    x = 13,181.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.