Home / 39,216.21-54,118.26-21,311.22

Finding the Fourth Proportional to 39,216.21, 54,118.26 and 21,311.22

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Solution

The fourth proportional to 39,216.21, 54,118.26 and 21,311.22 is: 29,409.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216.21 : 54,118.26 = 21,311.22 : x
  2. Step 2: Convert to fraction form
    39,216.21/54,118.26 = 21,311.22/x
  3. Step 3: Cross multiply
    39,216.21x = 54,118.26 × 21,311.22
  4. Step 4: Simplify right side
    39,216.21x = 1,153,326,144.88
  5. Step 5: Solve for x
    x = 1,153,326,144.88/39,216.21
  6. Step 6: Final answer
    x = 29,409.42

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Double scale
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Similar ratio
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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.