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Finding the Fourth Proportional to 21,933.86, 32,893.02 and 7,140.02

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Solution

The fourth proportional to 21,933.86, 32,893.02 and 7,140.02 is: 10,707.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.86 : 32,893.02 = 7,140.02 : x
  2. Step 2: Convert to fraction form
    21,933.86/32,893.02 = 7,140.02/x
  3. Step 3: Cross multiply
    21,933.86x = 32,893.02 × 7,140.02
  4. Step 4: Simplify right side
    21,933.86x = 234,856,820.66
  5. Step 5: Solve for x
    x = 234,856,820.66/21,933.86
  6. Step 6: Final answer
    x = 10,707.50

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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.