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Finding the Fourth Proportional to 20,460.60, 30,683.70 and 9,372.60

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Solution

The fourth proportional to 20,460.60, 30,683.70 and 9,372.60 is: 14,055.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.60 : 30,683.70 = 9,372.60 : x
  2. Step 2: Convert to fraction form
    20,460.60/30,683.70 = 9,372.60/x
  3. Step 3: Cross multiply
    20,460.60x = 30,683.70 × 9,372.60
  4. Step 4: Simplify right side
    20,460.60x = 287,586,046.62
  5. Step 5: Solve for x
    x = 287,586,046.62/20,460.60
  6. Step 6: Final answer
    x = 14,055.60

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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.