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Finding the Fourth Proportional to 20,273.60, 30,410.40 and 14,052.80

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Solution

The fourth proportional to 20,273.60, 30,410.40 and 14,052.80 is: 21,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.60 : 30,410.40 = 14,052.80 : x
  2. Step 2: Convert to fraction form
    20,273.60/30,410.40 = 14,052.80/x
  3. Step 3: Cross multiply
    20,273.60x = 30,410.40 × 14,052.80
  4. Step 4: Simplify right side
    20,273.60x = 427,351,269.12
  5. Step 5: Solve for x
    x = 427,351,269.12/20,273.60
  6. Step 6: Final answer
    x = 21,079.20

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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.