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Finding the Fourth Proportional to 35,495.52, 48,989.52 and 21,156

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Solution

The fourth proportional to 35,495.52, 48,989.52 and 21,156 is: 29,198.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,495.52 : 48,989.52 = 21,156 : x
  2. Step 2: Convert to fraction form
    35,495.52/48,989.52 = 21,156/x
  3. Step 3: Cross multiply
    35,495.52x = 48,989.52 × 21,156
  4. Step 4: Simplify right side
    35,495.52x = 1,036,422,285.12
  5. Step 5: Solve for x
    x = 1,036,422,285.12/35,495.52
  6. Step 6: Final answer
    x = 29,198.68

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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.