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Finding the Fourth Proportional to 12,665.26, 17,477.94 and 7,000.39

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Solution

The fourth proportional to 12,665.26, 17,477.94 and 7,000.39 is: 9,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.26 : 17,477.94 = 7,000.39 : x
  2. Step 2: Convert to fraction form
    12,665.26/17,477.94 = 7,000.39/x
  3. Step 3: Cross multiply
    12,665.26x = 17,477.94 × 7,000.39
  4. Step 4: Simplify right side
    12,665.26x = 122,352,444.50
  5. Step 5: Solve for x
    x = 122,352,444.50/12,665.26
  6. Step 6: Final answer
    x = 9,660.48

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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.