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Finding the Fourth Proportional to 18,305.78, 27,458.70 and 6,619.04

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Solution

The fourth proportional to 18,305.78, 27,458.70 and 6,619.04 is: 9,928.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.78 : 27,458.70 = 6,619.04 : x
  2. Step 2: Convert to fraction form
    18,305.78/27,458.70 = 6,619.04/x
  3. Step 3: Cross multiply
    18,305.78x = 27,458.70 × 6,619.04
  4. Step 4: Simplify right side
    18,305.78x = 181,750,233.65
  5. Step 5: Solve for x
    x = 181,750,233.65/18,305.78
  6. Step 6: Final answer
    x = 9,928.57

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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.