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Finding the Fourth Proportional to 13,907.66, 20,861.13 and 4,049.66

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Solution

The fourth proportional to 13,907.66, 20,861.13 and 4,049.66 is: 6,074.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.66 : 20,861.13 = 4,049.66 : x
  2. Step 2: Convert to fraction form
    13,907.66/20,861.13 = 4,049.66/x
  3. Step 3: Cross multiply
    13,907.66x = 20,861.13 × 4,049.66
  4. Step 4: Simplify right side
    13,907.66x = 84,480,483.72
  5. Step 5: Solve for x
    x = 84,480,483.72/13,907.66
  6. Step 6: Final answer
    x = 6,074.39

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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.