Home / 20,621.25-30,917.99-9,521.82

Finding the Fourth Proportional to 20,621.25, 30,917.99 and 9,521.82

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Solution

The fourth proportional to 20,621.25, 30,917.99 and 9,521.82 is: 14,276.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.25 : 30,917.99 = 9,521.82 : x
  2. Step 2: Convert to fraction form
    20,621.25/30,917.99 = 9,521.82/x
  3. Step 3: Cross multiply
    20,621.25x = 30,917.99 × 9,521.82
  4. Step 4: Simplify right side
    20,621.25x = 294,395,559.35
  5. Step 5: Solve for x
    x = 294,395,559.35/20,621.25
  6. Step 6: Final answer
    x = 14,276.32

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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.