Home / 12,664.65-17,456.26-9,515.37

Finding the Fourth Proportional to 12,664.65, 17,456.26 and 9,515.37

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Solution

The fourth proportional to 12,664.65, 17,456.26 and 9,515.37 is: 13,115.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.65 : 17,456.26 = 9,515.37 : x
  2. Step 2: Convert to fraction form
    12,664.65/17,456.26 = 9,515.37/x
  3. Step 3: Cross multiply
    12,664.65x = 17,456.26 × 9,515.37
  4. Step 4: Simplify right side
    12,664.65x = 166,102,832.23
  5. Step 5: Solve for x
    x = 166,102,832.23/12,664.65
  6. Step 6: Final answer
    x = 13,115.47

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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.