Home / 39,815.60-54,946.24-21,910.44

Finding the Fourth Proportional to 39,815.60, 54,946.24 and 21,910.44

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Solution

The fourth proportional to 39,815.60, 54,946.24 and 21,910.44 is: 30,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.60 : 54,946.24 = 21,910.44 : x
  2. Step 2: Convert to fraction form
    39,815.60/54,946.24 = 21,910.44/x
  3. Step 3: Cross multiply
    39,815.60x = 54,946.24 × 21,910.44
  4. Step 4: Simplify right side
    39,815.60x = 1,203,896,294.75
  5. Step 5: Solve for x
    x = 1,203,896,294.75/39,815.60
  6. Step 6: Final answer
    x = 30,236.80

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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.