Home / 39,026.62-53,856.78-21,121.58

Finding the Fourth Proportional to 39,026.62, 53,856.78 and 21,121.58

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Solution

The fourth proportional to 39,026.62, 53,856.78 and 21,121.58 is: 29,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,026.62 : 53,856.78 = 21,121.58 : x
  2. Step 2: Convert to fraction form
    39,026.62/53,856.78 = 21,121.58/x
  3. Step 3: Cross multiply
    39,026.62x = 53,856.78 × 21,121.58
  4. Step 4: Simplify right side
    39,026.62x = 1,137,540,287.31
  5. Step 5: Solve for x
    x = 1,137,540,287.31/39,026.62
  6. Step 6: Final answer
    x = 29,147.80

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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.