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Finding the Fourth Proportional to 38,012, 52,458.18 and 21,245

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Solution

The fourth proportional to 38,012, 52,458.18 and 21,245 is: 29,319.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,012 : 52,458.18 = 21,245 : x
  2. Step 2: Convert to fraction form
    38,012/52,458.18 = 21,245/x
  3. Step 3: Cross multiply
    38,012x = 52,458.18 × 21,245
  4. Step 4: Simplify right side
    38,012x = 1,114,474,034.10
  5. Step 5: Solve for x
    x = 1,114,474,034.10/38,012
  6. Step 6: Final answer
    x = 29,319.01

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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.