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Finding the Fourth Proportional to 20,045.87, 30,072.50 and 8,360.09

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Solution

The fourth proportional to 20,045.87, 30,072.50 and 8,360.09 is: 12,541.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,045.87 : 30,072.50 = 8,360.09 : x
  2. Step 2: Convert to fraction form
    20,045.87/30,072.50 = 8,360.09/x
  3. Step 3: Cross multiply
    20,045.87x = 30,072.50 × 8,360.09
  4. Step 4: Simplify right side
    20,045.87x = 251,408,764.72
  5. Step 5: Solve for x
    x = 251,408,764.72/20,045.87
  6. Step 6: Final answer
    x = 12,541.67

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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.