Home / 18,815.63-28,198.71-10,499.58

Finding the Fourth Proportional to 18,815.63, 28,198.71 and 10,499.58

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Solution

The fourth proportional to 18,815.63, 28,198.71 and 10,499.58 is: 15,735.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.63 : 28,198.71 = 10,499.58 : x
  2. Step 2: Convert to fraction form
    18,815.63/28,198.71 = 10,499.58/x
  3. Step 3: Cross multiply
    18,815.63x = 28,198.71 × 10,499.58
  4. Step 4: Simplify right side
    18,815.63x = 296,074,611.54
  5. Step 5: Solve for x
    x = 296,074,611.54/18,815.63
  6. Step 6: Final answer
    x = 15,735.57

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1.5x scale

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.