Home / 18,861.21-28,296.19-5,533.67

Finding the Fourth Proportional to 18,861.21, 28,296.19 and 5,533.67

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Solution

The fourth proportional to 18,861.21, 28,296.19 and 5,533.67 is: 8,301.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.21 : 28,296.19 = 5,533.67 : x
  2. Step 2: Convert to fraction form
    18,861.21/28,296.19 = 5,533.67/x
  3. Step 3: Cross multiply
    18,861.21x = 28,296.19 × 5,533.67
  4. Step 4: Simplify right side
    18,861.21x = 156,581,700.10
  5. Step 5: Solve for x
    x = 156,581,700.10/18,861.21
  6. Step 6: Final answer
    x = 8,301.78

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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.