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Finding the Fourth Proportional to 13,672.69, 20,509.04 and 4,438.69

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Solution

The fourth proportional to 13,672.69, 20,509.04 and 4,438.69 is: 6,658.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.69 : 20,509.04 = 4,438.69 : x
  2. Step 2: Convert to fraction form
    13,672.69/20,509.04 = 4,438.69/x
  3. Step 3: Cross multiply
    13,672.69x = 20,509.04 × 4,438.69
  4. Step 4: Simplify right side
    13,672.69x = 91,033,197.29
  5. Step 5: Solve for x
    x = 91,033,197.29/13,672.69
  6. Step 6: Final answer
    x = 6,658.03

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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.