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Finding the Fourth Proportional to 21,937.56, 32,898.18 and 7,893.78

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Solution

The fourth proportional to 21,937.56, 32,898.18 and 7,893.78 is: 11,837.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,937.56 : 32,898.18 = 7,893.78 : x
  2. Step 2: Convert to fraction form
    21,937.56/32,898.18 = 7,893.78/x
  3. Step 3: Cross multiply
    21,937.56x = 32,898.18 × 7,893.78
  4. Step 4: Simplify right side
    21,937.56x = 259,690,995.32
  5. Step 5: Solve for x
    x = 259,690,995.32/21,937.56
  6. Step 6: Final answer
    x = 11,837.73

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1.5x scale

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.