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Finding the Fourth Proportional to 35,893.64, 53,865.09 and 12,520.08

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Solution

The fourth proportional to 35,893.64, 53,865.09 and 12,520.08 is: 18,788.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,893.64 : 53,865.09 = 12,520.08 : x
  2. Step 2: Convert to fraction form
    35,893.64/53,865.09 = 12,520.08/x
  3. Step 3: Cross multiply
    35,893.64x = 53,865.09 × 12,520.08
  4. Step 4: Simplify right side
    35,893.64x = 674,394,966.68
  5. Step 5: Solve for x
    x = 674,394,966.68/35,893.64
  6. Step 6: Final answer
    x = 18,788.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.