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Finding the Fourth Proportional to 9,012.72, 13,503.60 and 8,099.67

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Solution

The fourth proportional to 9,012.72, 13,503.60 and 8,099.67 is: 12,135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,012.72 : 13,503.60 = 8,099.67 : x
  2. Step 2: Convert to fraction form
    9,012.72/13,503.60 = 8,099.67/x
  3. Step 3: Cross multiply
    9,012.72x = 13,503.60 × 8,099.67
  4. Step 4: Simplify right side
    9,012.72x = 109,374,703.81
  5. Step 5: Solve for x
    x = 109,374,703.81/9,012.72
  6. Step 6: Final answer
    x = 12,135.59

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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.