Home / 12,456.14-18,686.51-3,571.11

Finding the Fourth Proportional to 12,456.14, 18,686.51 and 3,571.11

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Solution

The fourth proportional to 12,456.14, 18,686.51 and 3,571.11 is: 5,357.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.14 : 18,686.51 = 3,571.11 : x
  2. Step 2: Convert to fraction form
    12,456.14/18,686.51 = 3,571.11/x
  3. Step 3: Cross multiply
    12,456.14x = 18,686.51 × 3,571.11
  4. Step 4: Simplify right side
    12,456.14x = 66,731,564.87
  5. Step 5: Solve for x
    x = 66,731,564.87/12,456.14
  6. Step 6: Final answer
    x = 5,357.33

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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.