Home / 18,825.74-28,221.83-7,147.16

Finding the Fourth Proportional to 18,825.74, 28,221.83 and 7,147.16

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Solution

The fourth proportional to 18,825.74, 28,221.83 and 7,147.16 is: 10,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.74 : 28,221.83 = 7,147.16 : x
  2. Step 2: Convert to fraction form
    18,825.74/28,221.83 = 7,147.16/x
  3. Step 3: Cross multiply
    18,825.74x = 28,221.83 × 7,147.16
  4. Step 4: Simplify right side
    18,825.74x = 201,705,890.29
  5. Step 5: Solve for x
    x = 201,705,890.29/18,825.74
  6. Step 6: Final answer
    x = 10,714.37

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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.