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Finding the Fourth Proportional to 21,957.96, 32,925.72 and 7,157.36

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Solution

The fourth proportional to 21,957.96, 32,925.72 and 7,157.36 is: 10,732.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.96 : 32,925.72 = 7,157.36 : x
  2. Step 2: Convert to fraction form
    21,957.96/32,925.72 = 7,157.36/x
  3. Step 3: Cross multiply
    21,957.96x = 32,925.72 × 7,157.36
  4. Step 4: Simplify right side
    21,957.96x = 235,661,231.30
  5. Step 5: Solve for x
    x = 235,661,231.30/21,957.96
  6. Step 6: Final answer
    x = 10,732.38

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