Home / 28,198.58-38,896.40-18,140.12

Finding the Fourth Proportional to 28,198.58, 38,896.40 and 18,140.12

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Solution

The fourth proportional to 28,198.58, 38,896.40 and 18,140.12 is: 25,022.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.58 : 38,896.40 = 18,140.12 : x
  2. Step 2: Convert to fraction form
    28,198.58/38,896.40 = 18,140.12/x
  3. Step 3: Cross multiply
    28,198.58x = 38,896.40 × 18,140.12
  4. Step 4: Simplify right side
    28,198.58x = 705,585,363.57
  5. Step 5: Solve for x
    x = 705,585,363.57/28,198.58
  6. Step 6: Final answer
    x = 25,022.02

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Double scale
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1.5x scale

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.