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Finding the Fourth Proportional to 9,015.92, 13,433.12 and 8,512.88

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Solution

The fourth proportional to 9,015.92, 13,433.12 and 8,512.88 is: 12,683.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,015.92 : 13,433.12 = 8,512.88 : x
  2. Step 2: Convert to fraction form
    9,015.92/13,433.12 = 8,512.88/x
  3. Step 3: Cross multiply
    9,015.92x = 13,433.12 × 8,512.88
  4. Step 4: Simplify right side
    9,015.92x = 114,354,538.59
  5. Step 5: Solve for x
    x = 114,354,538.59/9,015.92
  6. Step 6: Final answer
    x = 12,683.62

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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.