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Finding the Fourth Proportional to 12,466.80, 18,657 and 11,950.20

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Solution

The fourth proportional to 12,466.80, 18,657 and 11,950.20 is: 17,883.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,466.80 : 18,657 = 11,950.20 : x
  2. Step 2: Convert to fraction form
    12,466.80/18,657 = 11,950.20/x
  3. Step 3: Cross multiply
    12,466.80x = 18,657 × 11,950.20
  4. Step 4: Simplify right side
    12,466.80x = 222,954,881.40
  5. Step 5: Solve for x
    x = 222,954,881.40/12,466.80
  6. Step 6: Final answer
    x = 17,883.89

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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.