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Finding the Fourth Proportional to 14,072.88, 19,418.88 and 8,106.49

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Solution

The fourth proportional to 14,072.88, 19,418.88 and 8,106.49 is: 11,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,072.88 : 19,418.88 = 8,106.49 : x
  2. Step 2: Convert to fraction form
    14,072.88/19,418.88 = 8,106.49/x
  3. Step 3: Cross multiply
    14,072.88x = 19,418.88 × 8,106.49
  4. Step 4: Simplify right side
    14,072.88x = 157,418,956.53
  5. Step 5: Solve for x
    x = 157,418,956.53/14,072.88
  6. Step 6: Final answer
    x = 11,185.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.