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Finding the Fourth Proportional to 13,338.05, 20,008.05 and 4,572.89

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Solution

The fourth proportional to 13,338.05, 20,008.05 and 4,572.89 is: 6,859.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.05 : 20,008.05 = 4,572.89 : x
  2. Step 2: Convert to fraction form
    13,338.05/20,008.05 = 4,572.89/x
  3. Step 3: Cross multiply
    13,338.05x = 20,008.05 × 4,572.89
  4. Step 4: Simplify right side
    13,338.05x = 91,494,611.76
  5. Step 5: Solve for x
    x = 91,494,611.76/13,338.05
  6. Step 6: Final answer
    x = 6,859.67

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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.