Home / 18,772.14-28,162.20-7,085.28

Finding the Fourth Proportional to 18,772.14, 28,162.20 and 7,085.28

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Solution

The fourth proportional to 18,772.14, 28,162.20 and 7,085.28 is: 10,629.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.14 : 28,162.20 = 7,085.28 : x
  2. Step 2: Convert to fraction form
    18,772.14/28,162.20 = 7,085.28/x
  3. Step 3: Cross multiply
    18,772.14x = 28,162.20 × 7,085.28
  4. Step 4: Simplify right side
    18,772.14x = 199,537,072.42
  5. Step 5: Solve for x
    x = 199,537,072.42/18,772.14
  6. Step 6: Final answer
    x = 10,629.43

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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.