Home / 18,800.21-28,200.24-8,404.67

Finding the Fourth Proportional to 18,800.21, 28,200.24 and 8,404.67

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Solution

The fourth proportional to 18,800.21, 28,200.24 and 8,404.67 is: 12,606.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.21 : 28,200.24 = 8,404.67 : x
  2. Step 2: Convert to fraction form
    18,800.21/28,200.24 = 8,404.67/x
  3. Step 3: Cross multiply
    18,800.21x = 28,200.24 × 8,404.67
  4. Step 4: Simplify right side
    18,800.21x = 237,013,570.12
  5. Step 5: Solve for x
    x = 237,013,570.12/18,800.21
  6. Step 6: Final answer
    x = 12,606.97

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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.