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Finding the Fourth Proportional to 20,652.71, 30,974.54 and 5,861.30

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Solution

The fourth proportional to 20,652.71, 30,974.54 and 5,861.30 is: 8,790.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.71 : 30,974.54 = 5,861.30 : x
  2. Step 2: Convert to fraction form
    20,652.71/30,974.54 = 5,861.30/x
  3. Step 3: Cross multiply
    20,652.71x = 30,974.54 × 5,861.30
  4. Step 4: Simplify right side
    20,652.71x = 181,550,887.12
  5. Step 5: Solve for x
    x = 181,550,887.12/20,652.71
  6. Step 6: Final answer
    x = 8,790.66

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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.