Home / 28,644.36-39,548.51-21,917.97

Finding the Fourth Proportional to 28,644.36, 39,548.51 and 21,917.97

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Solution

The fourth proportional to 28,644.36, 39,548.51 and 21,917.97 is: 30,261.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,644.36 : 39,548.51 = 21,917.97 : x
  2. Step 2: Convert to fraction form
    28,644.36/39,548.51 = 21,917.97/x
  3. Step 3: Cross multiply
    28,644.36x = 39,548.51 × 21,917.97
  4. Step 4: Simplify right side
    28,644.36x = 866,822,946.13
  5. Step 5: Solve for x
    x = 866,822,946.13/28,644.36
  6. Step 6: Final answer
    x = 30,261.56

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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.