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Finding the Fourth Proportional to 10,992.54, 15,168.79 and 6,212.89

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Solution

The fourth proportional to 10,992.54, 15,168.79 and 6,212.89 is: 8,573.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.54 : 15,168.79 = 6,212.89 : x
  2. Step 2: Convert to fraction form
    10,992.54/15,168.79 = 6,212.89/x
  3. Step 3: Cross multiply
    10,992.54x = 15,168.79 × 6,212.89
  4. Step 4: Simplify right side
    10,992.54x = 94,242,023.70
  5. Step 5: Solve for x
    x = 94,242,023.70/10,992.54
  6. Step 6: Final answer
    x = 8,573.27

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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.