Home / 12,386.13-18,571.30-8,164.51

Finding the Fourth Proportional to 12,386.13, 18,571.30 and 8,164.51

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Solution

The fourth proportional to 12,386.13, 18,571.30 and 8,164.51 is: 12,241.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.13 : 18,571.30 = 8,164.51 : x
  2. Step 2: Convert to fraction form
    12,386.13/18,571.30 = 8,164.51/x
  3. Step 3: Cross multiply
    12,386.13x = 18,571.30 × 8,164.51
  4. Step 4: Simplify right side
    12,386.13x = 151,625,497.72
  5. Step 5: Solve for x
    x = 151,625,497.72/12,386.13
  6. Step 6: Final answer
    x = 12,241.56

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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.