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Finding the Fourth Proportional to 18,019.87, 27,022.55 and 7,482.71

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Solution

The fourth proportional to 18,019.87, 27,022.55 and 7,482.71 is: 11,221.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,019.87 : 27,022.55 = 7,482.71 : x
  2. Step 2: Convert to fraction form
    18,019.87/27,022.55 = 7,482.71/x
  3. Step 3: Cross multiply
    18,019.87x = 27,022.55 × 7,482.71
  4. Step 4: Simplify right side
    18,019.87x = 202,201,935.25
  5. Step 5: Solve for x
    x = 202,201,935.25/18,019.87
  6. Step 6: Final answer
    x = 11,221.06

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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.