Home / 39,229.28-54,136.36-21,324.24

Finding the Fourth Proportional to 39,229.28, 54,136.36 and 21,324.24

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Solution

The fourth proportional to 39,229.28, 54,136.36 and 21,324.24 is: 29,427.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,229.28 : 54,136.36 = 21,324.24 : x
  2. Step 2: Convert to fraction form
    39,229.28/54,136.36 = 21,324.24/x
  3. Step 3: Cross multiply
    39,229.28x = 54,136.36 × 21,324.24
  4. Step 4: Simplify right side
    39,229.28x = 1,154,416,733.37
  5. Step 5: Solve for x
    x = 1,154,416,733.37/39,229.28
  6. Step 6: Final answer
    x = 29,427.43

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Half scale
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Double scale
Find fourth proportional to 39,230.28, 54,137.74 and 21,325.24
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.