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Finding the Fourth Proportional to 18,155.93, 27,206.16 and 7,620.24

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Solution

The fourth proportional to 18,155.93, 27,206.16 and 7,620.24 is: 11,418.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.93 : 27,206.16 = 7,620.24 : x
  2. Step 2: Convert to fraction form
    18,155.93/27,206.16 = 7,620.24/x
  3. Step 3: Cross multiply
    18,155.93x = 27,206.16 × 7,620.24
  4. Step 4: Simplify right side
    18,155.93x = 207,317,468.68
  5. Step 5: Solve for x
    x = 207,317,468.68/18,155.93
  6. Step 6: Final answer
    x = 11,418.72

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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.