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Finding the Fourth Proportional to 17,878.20, 26,808.64 and 10,485.08

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Solution

The fourth proportional to 17,878.20, 26,808.64 and 10,485.08 is: 15,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,878.20 : 26,808.64 = 10,485.08 : x
  2. Step 2: Convert to fraction form
    17,878.20/26,808.64 = 10,485.08/x
  3. Step 3: Cross multiply
    17,878.20x = 26,808.64 × 10,485.08
  4. Step 4: Simplify right side
    17,878.20x = 281,090,735.09
  5. Step 5: Solve for x
    x = 281,090,735.09/17,878.20
  6. Step 6: Final answer
    x = 15,722.54

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.