Home / 38,427-53,029.26-21,660.60

Finding the Fourth Proportional to 38,427, 53,029.26 and 21,660.60

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Solution

The fourth proportional to 38,427, 53,029.26 and 21,660.60 is: 29,891.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,427 : 53,029.26 = 21,660.60 : x
  2. Step 2: Convert to fraction form
    38,427/53,029.26 = 21,660.60/x
  3. Step 3: Cross multiply
    38,427x = 53,029.26 × 21,660.60
  4. Step 4: Simplify right side
    38,427x = 1,148,645,589.16
  5. Step 5: Solve for x
    x = 1,148,645,589.16/38,427
  6. Step 6: Final answer
    x = 29,891.63

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Double scale
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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.