Home / 21,455.93-32,183.01-8,972.75

Finding the Fourth Proportional to 21,455.93, 32,183.01 and 8,972.75

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Solution

The fourth proportional to 21,455.93, 32,183.01 and 8,972.75 is: 13,458.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.93 : 32,183.01 = 8,972.75 : x
  2. Step 2: Convert to fraction form
    21,455.93/32,183.01 = 8,972.75/x
  3. Step 3: Cross multiply
    21,455.93x = 32,183.01 × 8,972.75
  4. Step 4: Simplify right side
    21,455.93x = 288,769,942.06
  5. Step 5: Solve for x
    x = 288,769,942.06/21,455.93
  6. Step 6: Final answer
    x = 13,458.75

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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.