Home / 12,860.34-19,292.36-3,976.36

Finding the Fourth Proportional to 12,860.34, 19,292.36 and 3,976.36

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Solution

The fourth proportional to 12,860.34, 19,292.36 and 3,976.36 is: 5,965.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.34 : 19,292.36 = 3,976.36 : x
  2. Step 2: Convert to fraction form
    12,860.34/19,292.36 = 3,976.36/x
  3. Step 3: Cross multiply
    12,860.34x = 19,292.36 × 3,976.36
  4. Step 4: Simplify right side
    12,860.34x = 76,713,377.81
  5. Step 5: Solve for x
    x = 76,713,377.81/12,860.34
  6. Step 6: Final answer
    x = 5,965.11

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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.