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Finding the Fourth Proportional to 14,662.60, 21,993.90 and 9,122.20

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Solution

The fourth proportional to 14,662.60, 21,993.90 and 9,122.20 is: 13,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,662.60 : 21,993.90 = 9,122.20 : x
  2. Step 2: Convert to fraction form
    14,662.60/21,993.90 = 9,122.20/x
  3. Step 3: Cross multiply
    14,662.60x = 21,993.90 × 9,122.20
  4. Step 4: Simplify right side
    14,662.60x = 200,632,754.58
  5. Step 5: Solve for x
    x = 200,632,754.58/14,662.60
  6. Step 6: Final answer
    x = 13,683.30

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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.