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Finding the Fourth Proportional to 12,475.69, 18,662.22 and 11,380.79

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Solution

The fourth proportional to 12,475.69, 18,662.22 and 11,380.79 is: 17,024.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.69 : 18,662.22 = 11,380.79 : x
  2. Step 2: Convert to fraction form
    12,475.69/18,662.22 = 11,380.79/x
  3. Step 3: Cross multiply
    12,475.69x = 18,662.22 × 11,380.79
  4. Step 4: Simplify right side
    12,475.69x = 212,390,853.41
  5. Step 5: Solve for x
    x = 212,390,853.41/12,475.69
  6. Step 6: Final answer
    x = 17,024.38

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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.