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Finding the Fourth Proportional to 12,895.54, 17,679.95 and 12,662.26

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Solution

The fourth proportional to 12,895.54, 17,679.95 and 12,662.26 is: 17,360.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,895.54 : 17,679.95 = 12,662.26 : x
  2. Step 2: Convert to fraction form
    12,895.54/17,679.95 = 12,662.26/x
  3. Step 3: Cross multiply
    12,895.54x = 17,679.95 × 12,662.26
  4. Step 4: Simplify right side
    12,895.54x = 223,867,971.98
  5. Step 5: Solve for x
    x = 223,867,971.98/12,895.54
  6. Step 6: Final answer
    x = 17,360.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.