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Finding the Fourth Proportional to 14,019.44, 20,999.98 and 6,629.80

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Solution

The fourth proportional to 14,019.44, 20,999.98 and 6,629.80 is: 9,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,019.44 : 20,999.98 = 6,629.80 : x
  2. Step 2: Convert to fraction form
    14,019.44/20,999.98 = 6,629.80/x
  3. Step 3: Cross multiply
    14,019.44x = 20,999.98 × 6,629.80
  4. Step 4: Simplify right side
    14,019.44x = 139,225,667.40
  5. Step 5: Solve for x
    x = 139,225,667.40/14,019.44
  6. Step 6: Final answer
    x = 9,930.90

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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.