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Finding the Fourth Proportional to 11,335.78, 17,000.79 and 4,406.50

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Solution

The fourth proportional to 11,335.78, 17,000.79 and 4,406.50 is: 6,608.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,335.78 : 17,000.79 = 4,406.50 : x
  2. Step 2: Convert to fraction form
    11,335.78/17,000.79 = 4,406.50/x
  3. Step 3: Cross multiply
    11,335.78x = 17,000.79 × 4,406.50
  4. Step 4: Simplify right side
    11,335.78x = 74,913,981.14
  5. Step 5: Solve for x
    x = 74,913,981.14/11,335.78
  6. Step 6: Final answer
    x = 6,608.63

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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.