Home / 19,863.62-27,408.75-11,478.50

Finding the Fourth Proportional to 19,863.62, 27,408.75 and 11,478.50

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Solution

The fourth proportional to 19,863.62, 27,408.75 and 11,478.50 is: 15,838.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.62 : 27,408.75 = 11,478.50 : x
  2. Step 2: Convert to fraction form
    19,863.62/27,408.75 = 11,478.50/x
  3. Step 3: Cross multiply
    19,863.62x = 27,408.75 × 11,478.50
  4. Step 4: Simplify right side
    19,863.62x = 314,611,336.88
  5. Step 5: Solve for x
    x = 314,611,336.88/19,863.62
  6. Step 6: Final answer
    x = 15,838.57

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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.