Home / 18,825.38-28,240.52-5,679.08

Finding the Fourth Proportional to 18,825.38, 28,240.52 and 5,679.08

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Solution

The fourth proportional to 18,825.38, 28,240.52 and 5,679.08 is: 8,519.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.38 : 28,240.52 = 5,679.08 : x
  2. Step 2: Convert to fraction form
    18,825.38/28,240.52 = 5,679.08/x
  3. Step 3: Cross multiply
    18,825.38x = 28,240.52 × 5,679.08
  4. Step 4: Simplify right side
    18,825.38x = 160,380,172.32
  5. Step 5: Solve for x
    x = 160,380,172.32/18,825.38
  6. Step 6: Final answer
    x = 8,519.36

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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.