Home / 39,215.44-54,118.20-21,311.44

Finding the Fourth Proportional to 39,215.44, 54,118.20 and 21,311.44

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Solution

The fourth proportional to 39,215.44, 54,118.20 and 21,311.44 is: 29,410.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,215.44 : 54,118.20 = 21,311.44 : x
  2. Step 2: Convert to fraction form
    39,215.44/54,118.20 = 21,311.44/x
  3. Step 3: Cross multiply
    39,215.44x = 54,118.20 × 21,311.44
  4. Step 4: Simplify right side
    39,215.44x = 1,153,336,772.21
  5. Step 5: Solve for x
    x = 1,153,336,772.21/39,215.44
  6. Step 6: Final answer
    x = 29,410.27

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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.