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Finding the Fourth Proportional to 20,600.70, 30,889.53 and 8,285.82

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Solution

The fourth proportional to 20,600.70, 30,889.53 and 8,285.82 is: 12,424.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.70 : 30,889.53 = 8,285.82 : x
  2. Step 2: Convert to fraction form
    20,600.70/30,889.53 = 8,285.82/x
  3. Step 3: Cross multiply
    20,600.70x = 30,889.53 × 8,285.82
  4. Step 4: Simplify right side
    20,600.70x = 255,945,085.46
  5. Step 5: Solve for x
    x = 255,945,085.46/20,600.70
  6. Step 6: Final answer
    x = 12,424.10

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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.