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Finding the Fourth Proportional to 15,893.61, 21,933.10 and 8,820.01

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Solution

The fourth proportional to 15,893.61, 21,933.10 and 8,820.01 is: 12,171.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,893.61 : 21,933.10 = 8,820.01 : x
  2. Step 2: Convert to fraction form
    15,893.61/21,933.10 = 8,820.01/x
  3. Step 3: Cross multiply
    15,893.61x = 21,933.10 × 8,820.01
  4. Step 4: Simplify right side
    15,893.61x = 193,450,161.33
  5. Step 5: Solve for x
    x = 193,450,161.33/15,893.61
  6. Step 6: Final answer
    x = 12,171.57

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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.