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Finding the Fourth Proportional to 12,262.10, 18,254.44 and 12,189.20

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Solution

The fourth proportional to 12,262.10, 18,254.44 and 12,189.20 is: 18,145.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,262.10 : 18,254.44 = 12,189.20 : x
  2. Step 2: Convert to fraction form
    12,262.10/18,254.44 = 12,189.20/x
  3. Step 3: Cross multiply
    12,262.10x = 18,254.44 × 12,189.20
  4. Step 4: Simplify right side
    12,262.10x = 222,507,020.05
  5. Step 5: Solve for x
    x = 222,507,020.05/12,262.10
  6. Step 6: Final answer
    x = 18,145.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.