Home / 18,824.05-28,219.30-7,145.47

Finding the Fourth Proportional to 18,824.05, 28,219.30 and 7,145.47

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Solution

The fourth proportional to 18,824.05, 28,219.30 and 7,145.47 is: 10,711.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,824.05 : 28,219.30 = 7,145.47 : x
  2. Step 2: Convert to fraction form
    18,824.05/28,219.30 = 7,145.47/x
  3. Step 3: Cross multiply
    18,824.05x = 28,219.30 × 7,145.47
  4. Step 4: Simplify right side
    18,824.05x = 201,640,060.44
  5. Step 5: Solve for x
    x = 201,640,060.44/18,824.05
  6. Step 6: Final answer
    x = 10,711.83

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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.