Home / 39,161.84-54,043.37-21,256.83

Finding the Fourth Proportional to 39,161.84, 54,043.37 and 21,256.83

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Solution

The fourth proportional to 39,161.84, 54,043.37 and 21,256.83 is: 29,334.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,161.84 : 54,043.37 = 21,256.83 : x
  2. Step 2: Convert to fraction form
    39,161.84/54,043.37 = 21,256.83/x
  3. Step 3: Cross multiply
    39,161.84x = 54,043.37 × 21,256.83
  4. Step 4: Simplify right side
    39,161.84x = 1,148,790,622.43
  5. Step 5: Solve for x
    x = 1,148,790,622.43/39,161.84
  6. Step 6: Final answer
    x = 29,334.44

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Half scale
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Double scale
Find fourth proportional to 39,162.84, 54,044.75 and 21,257.83
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.