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Finding the Fourth Proportional to 38,999.48, 53,819.09 and 21,094.50

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Solution

The fourth proportional to 38,999.48, 53,819.09 and 21,094.50 is: 29,110.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,999.48 : 53,819.09 = 21,094.50 : x
  2. Step 2: Convert to fraction form
    38,999.48/53,819.09 = 21,094.50/x
  3. Step 3: Cross multiply
    38,999.48x = 53,819.09 × 21,094.50
  4. Step 4: Simplify right side
    38,999.48x = 1,135,286,794.01
  5. Step 5: Solve for x
    x = 1,135,286,794.01/38,999.48
  6. Step 6: Final answer
    x = 29,110.31

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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.