Home / 18,759.60-28,137.51-5,611.95

Finding the Fourth Proportional to 18,759.60, 28,137.51 and 5,611.95

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Solution

The fourth proportional to 18,759.60, 28,137.51 and 5,611.95 is: 8,417.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.60 : 28,137.51 = 5,611.95 : x
  2. Step 2: Convert to fraction form
    18,759.60/28,137.51 = 5,611.95/x
  3. Step 3: Cross multiply
    18,759.60x = 28,137.51 × 5,611.95
  4. Step 4: Simplify right side
    18,759.60x = 157,906,299.24
  5. Step 5: Solve for x
    x = 157,906,299.24/18,759.60
  6. Step 6: Final answer
    x = 8,417.36

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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.