Home / 19,317.21-28,972.38-8,784.75

Finding the Fourth Proportional to 19,317.21, 28,972.38 and 8,784.75

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Solution

The fourth proportional to 19,317.21, 28,972.38 and 8,784.75 is: 13,175.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,317.21 : 28,972.38 = 8,784.75 : x
  2. Step 2: Convert to fraction form
    19,317.21/28,972.38 = 8,784.75/x
  3. Step 3: Cross multiply
    19,317.21x = 28,972.38 × 8,784.75
  4. Step 4: Simplify right side
    19,317.21x = 254,515,115.21
  5. Step 5: Solve for x
    x = 254,515,115.21/19,317.21
  6. Step 6: Final answer
    x = 13,175.56

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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.