Home / 18,825.62-28,220.97-7,131.02

Finding the Fourth Proportional to 18,825.62, 28,220.97 and 7,131.02

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Solution

The fourth proportional to 18,825.62, 28,220.97 and 7,131.02 is: 10,689.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.62 : 28,220.97 = 7,131.02 : x
  2. Step 2: Convert to fraction form
    18,825.62/28,220.97 = 7,131.02/x
  3. Step 3: Cross multiply
    18,825.62x = 28,220.97 × 7,131.02
  4. Step 4: Simplify right side
    18,825.62x = 201,244,301.49
  5. Step 5: Solve for x
    x = 201,244,301.49/18,825.62
  6. Step 6: Final answer
    x = 10,689.92

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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.