Home / 28,235.25-38,965.86-15,660

Finding the Fourth Proportional to 28,235.25, 38,965.86 and 15,660

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Solution

The fourth proportional to 28,235.25, 38,965.86 and 15,660 is: 21,611.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.25 : 38,965.86 = 15,660 : x
  2. Step 2: Convert to fraction form
    28,235.25/38,965.86 = 15,660/x
  3. Step 3: Cross multiply
    28,235.25x = 38,965.86 × 15,660
  4. Step 4: Simplify right side
    28,235.25x = 610,205,367.60
  5. Step 5: Solve for x
    x = 610,205,367.60/28,235.25
  6. Step 6: Final answer
    x = 21,611.47

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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.