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Finding the Fourth Proportional to 18,287.44, 27,410.45 and 8,406.32

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Solution

The fourth proportional to 18,287.44, 27,410.45 and 8,406.32 is: 12,599.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.44 : 27,410.45 = 8,406.32 : x
  2. Step 2: Convert to fraction form
    18,287.44/27,410.45 = 8,406.32/x
  3. Step 3: Cross multiply
    18,287.44x = 27,410.45 × 8,406.32
  4. Step 4: Simplify right side
    18,287.44x = 230,421,014.04
  5. Step 5: Solve for x
    x = 230,421,014.04/18,287.44
  6. Step 6: Final answer
    x = 12,599.96

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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.