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Finding the Fourth Proportional to 21,767.72, 32,650.86 and 9,455.72

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Solution

The fourth proportional to 21,767.72, 32,650.86 and 9,455.72 is: 14,183.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,767.72 : 32,650.86 = 9,455.72 : x
  2. Step 2: Convert to fraction form
    21,767.72/32,650.86 = 9,455.72/x
  3. Step 3: Cross multiply
    21,767.72x = 32,650.86 × 9,455.72
  4. Step 4: Simplify right side
    21,767.72x = 308,737,389.92
  5. Step 5: Solve for x
    x = 308,737,389.92/21,767.72
  6. Step 6: Final answer
    x = 14,183.27

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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.