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Finding the Fourth Proportional to 21,956.67, 32,967.81 and 21,628.62

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Solution

The fourth proportional to 21,956.67, 32,967.81 and 21,628.62 is: 32,475.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.67 : 32,967.81 = 21,628.62 : x
  2. Step 2: Convert to fraction form
    21,956.67/32,967.81 = 21,628.62/x
  3. Step 3: Cross multiply
    21,956.67x = 32,967.81 × 21,628.62
  4. Step 4: Simplify right side
    21,956.67x = 713,048,234.72
  5. Step 5: Solve for x
    x = 713,048,234.72/21,956.67
  6. Step 6: Final answer
    x = 32,475.24

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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.