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Finding the Fourth Proportional to 18,544.86, 27,820.94 and 6,858.18

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Solution

The fourth proportional to 18,544.86, 27,820.94 and 6,858.18 is: 10,288.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,544.86 : 27,820.94 = 6,858.18 : x
  2. Step 2: Convert to fraction form
    18,544.86/27,820.94 = 6,858.18/x
  3. Step 3: Cross multiply
    18,544.86x = 27,820.94 × 6,858.18
  4. Step 4: Simplify right side
    18,544.86x = 190,800,980.00
  5. Step 5: Solve for x
    x = 190,800,980.00/18,544.86
  6. Step 6: Final answer
    x = 10,288.62

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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.