Home / 18,861.66-28,283.38-5,711.11

Finding the Fourth Proportional to 18,861.66, 28,283.38 and 5,711.11

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Solution

The fourth proportional to 18,861.66, 28,283.38 and 5,711.11 is: 8,563.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.66 : 28,283.38 = 5,711.11 : x
  2. Step 2: Convert to fraction form
    18,861.66/28,283.38 = 5,711.11/x
  3. Step 3: Cross multiply
    18,861.66x = 28,283.38 × 5,711.11
  4. Step 4: Simplify right side
    18,861.66x = 161,529,409.37
  5. Step 5: Solve for x
    x = 161,529,409.37/18,861.66
  6. Step 6: Final answer
    x = 8,563.90

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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.