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Finding the Fourth Proportional to 20,482.60, 30,704.22 and 13,066.12

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Solution

The fourth proportional to 20,482.60, 30,704.22 and 13,066.12 is: 19,586.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.60 : 30,704.22 = 13,066.12 : x
  2. Step 2: Convert to fraction form
    20,482.60/30,704.22 = 13,066.12/x
  3. Step 3: Cross multiply
    20,482.60x = 30,704.22 × 13,066.12
  4. Step 4: Simplify right side
    20,482.60x = 401,185,023.03
  5. Step 5: Solve for x
    x = 401,185,023.03/20,482.60
  6. Step 6: Final answer
    x = 19,586.63

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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.