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Finding the Fourth Proportional to 11,273.52, 16,916.04 and 8,220.72

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Solution

The fourth proportional to 11,273.52, 16,916.04 and 8,220.72 is: 12,335.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,273.52 : 16,916.04 = 8,220.72 : x
  2. Step 2: Convert to fraction form
    11,273.52/16,916.04 = 8,220.72/x
  3. Step 3: Cross multiply
    11,273.52x = 16,916.04 × 8,220.72
  4. Step 4: Simplify right side
    11,273.52x = 139,062,028.35
  5. Step 5: Solve for x
    x = 139,062,028.35/11,273.52
  6. Step 6: Final answer
    x = 12,335.28

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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.