Home / 18,891.02-28,311.73-7,791.59

Finding the Fourth Proportional to 18,891.02, 28,311.73 and 7,791.59

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Solution

The fourth proportional to 18,891.02, 28,311.73 and 7,791.59 is: 11,677.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.02 : 28,311.73 = 7,791.59 : x
  2. Step 2: Convert to fraction form
    18,891.02/28,311.73 = 7,791.59/x
  3. Step 3: Cross multiply
    18,891.02x = 28,311.73 × 7,791.59
  4. Step 4: Simplify right side
    18,891.02x = 220,593,443.65
  5. Step 5: Solve for x
    x = 220,593,443.65/18,891.02
  6. Step 6: Final answer
    x = 11,677.16

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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.