Home / 20,621.84-28,456.44-11,670.44

Finding the Fourth Proportional to 20,621.84, 28,456.44 and 11,670.44

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Solution

The fourth proportional to 20,621.84, 28,456.44 and 11,670.44 is: 16,104.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.84 : 28,456.44 = 11,670.44 : x
  2. Step 2: Convert to fraction form
    20,621.84/28,456.44 = 11,670.44/x
  3. Step 3: Cross multiply
    20,621.84x = 28,456.44 × 11,670.44
  4. Step 4: Simplify right side
    20,621.84x = 332,099,175.63
  5. Step 5: Solve for x
    x = 332,099,175.63/20,621.84
  6. Step 6: Final answer
    x = 16,104.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.