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Finding the Fourth Proportional to 9,992.60, 15,002.10 and 8,019.32

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Solution

The fourth proportional to 9,992.60, 15,002.10 and 8,019.32 is: 12,039.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.60 : 15,002.10 = 8,019.32 : x
  2. Step 2: Convert to fraction form
    9,992.60/15,002.10 = 8,019.32/x
  3. Step 3: Cross multiply
    9,992.60x = 15,002.10 × 8,019.32
  4. Step 4: Simplify right side
    9,992.60x = 120,306,640.57
  5. Step 5: Solve for x
    x = 120,306,640.57/9,992.60
  6. Step 6: Final answer
    x = 12,039.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.