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Finding the Fourth Proportional to 12,898, 17,803.04 and 8,422.44

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Solution

The fourth proportional to 12,898, 17,803.04 and 8,422.44 is: 11,625.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898 : 17,803.04 = 8,422.44 : x
  2. Step 2: Convert to fraction form
    12,898/17,803.04 = 8,422.44/x
  3. Step 3: Cross multiply
    12,898x = 17,803.04 × 8,422.44
  4. Step 4: Simplify right side
    12,898x = 149,945,036.22
  5. Step 5: Solve for x
    x = 149,945,036.22/12,898
  6. Step 6: Final answer
    x = 11,625.45

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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.