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Finding the Fourth Proportional to 30,236.21, 45,342.63 and 9,968.09

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Solution

The fourth proportional to 30,236.21, 45,342.63 and 9,968.09 is: 14,948.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,236.21 : 45,342.63 = 9,968.09 : x
  2. Step 2: Convert to fraction form
    30,236.21/45,342.63 = 9,968.09/x
  3. Step 3: Cross multiply
    30,236.21x = 45,342.63 × 9,968.09
  4. Step 4: Simplify right side
    30,236.21x = 451,979,189.96
  5. Step 5: Solve for x
    x = 451,979,189.96/30,236.21
  6. Step 6: Final answer
    x = 14,948.28

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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.