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Finding the Fourth Proportional to 12,706.11, 19,059.03 and 12,392.37

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Solution

The fourth proportional to 12,706.11, 19,059.03 and 12,392.37 is: 18,588.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,706.11 : 19,059.03 = 12,392.37 : x
  2. Step 2: Convert to fraction form
    12,706.11/19,059.03 = 12,392.37/x
  3. Step 3: Cross multiply
    12,706.11x = 19,059.03 × 12,392.37
  4. Step 4: Simplify right side
    12,706.11x = 236,186,551.60
  5. Step 5: Solve for x
    x = 236,186,551.60/12,706.11
  6. Step 6: Final answer
    x = 18,588.42

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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.