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Finding the Fourth Proportional to 20,447.00, 30,670.46 and 6,408.11

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Solution

The fourth proportional to 20,447.00, 30,670.46 and 6,408.11 is: 9,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.00 : 30,670.46 = 6,408.11 : x
  2. Step 2: Convert to fraction form
    20,447.00/30,670.46 = 6,408.11/x
  3. Step 3: Cross multiply
    20,447.00x = 30,670.46 × 6,408.11
  4. Step 4: Simplify right side
    20,447.00x = 196,539,496.04
  5. Step 5: Solve for x
    x = 196,539,496.04/20,447.00
  6. Step 6: Final answer
    x = 9,612.15

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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.