Home / 12,382.48-17,091.10-7,664.08

Finding the Fourth Proportional to 12,382.48, 17,091.10 and 7,664.08

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Solution

The fourth proportional to 12,382.48, 17,091.10 and 7,664.08 is: 10,578.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382.48 : 17,091.10 = 7,664.08 : x
  2. Step 2: Convert to fraction form
    12,382.48/17,091.10 = 7,664.08/x
  3. Step 3: Cross multiply
    12,382.48x = 17,091.10 × 7,664.08
  4. Step 4: Simplify right side
    12,382.48x = 130,987,557.69
  5. Step 5: Solve for x
    x = 130,987,557.69/12,382.48
  6. Step 6: Final answer
    x = 10,578.46

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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.