Home / 53,020.36-79,540.20-21,838.60

Finding the Fourth Proportional to 53,020.36, 79,540.20 and 21,838.60

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Solution

The fourth proportional to 53,020.36, 79,540.20 and 21,838.60 is: 32,761.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,020.36 : 79,540.20 = 21,838.60 : x
  2. Step 2: Convert to fraction form
    53,020.36/79,540.20 = 21,838.60/x
  3. Step 3: Cross multiply
    53,020.36x = 79,540.20 × 21,838.60
  4. Step 4: Simplify right side
    53,020.36x = 1,737,046,611.72
  5. Step 5: Solve for x
    x = 1,737,046,611.72/53,020.36
  6. Step 6: Final answer
    x = 32,761.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.