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Finding the Fourth Proportional to 21,035, 29,010 and 18,201.46

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Solution

The fourth proportional to 21,035, 29,010 and 18,201.46 is: 25,102.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035 : 29,010 = 18,201.46 : x
  2. Step 2: Convert to fraction form
    21,035/29,010 = 18,201.46/x
  3. Step 3: Cross multiply
    21,035x = 29,010 × 18,201.46
  4. Step 4: Simplify right side
    21,035x = 528,024,354.60
  5. Step 5: Solve for x
    x = 528,024,354.60/21,035
  6. Step 6: Final answer
    x = 25,102.18

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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.