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Finding the Fourth Proportional to 38,501.02, 53,129.82 and 21,505.20

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Solution

The fourth proportional to 38,501.02, 53,129.82 and 21,505.20 is: 29,676.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,501.02 : 53,129.82 = 21,505.20 : x
  2. Step 2: Convert to fraction form
    38,501.02/53,129.82 = 21,505.20/x
  3. Step 3: Cross multiply
    38,501.02x = 53,129.82 × 21,505.20
  4. Step 4: Simplify right side
    38,501.02x = 1,142,567,286.47
  5. Step 5: Solve for x
    x = 1,142,567,286.47/38,501.02
  6. Step 6: Final answer
    x = 29,676.29

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.