Home / 18,940.25-28,384.86-7,247.09

Finding the Fourth Proportional to 18,940.25, 28,384.86 and 7,247.09

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Solution

The fourth proportional to 18,940.25, 28,384.86 and 7,247.09 is: 10,860.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.25 : 28,384.86 = 7,247.09 : x
  2. Step 2: Convert to fraction form
    18,940.25/28,384.86 = 7,247.09/x
  3. Step 3: Cross multiply
    18,940.25x = 28,384.86 × 7,247.09
  4. Step 4: Simplify right side
    18,940.25x = 205,707,733.20
  5. Step 5: Solve for x
    x = 205,707,733.20/18,940.25
  6. Step 6: Final answer
    x = 10,860.88

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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.