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Finding the Fourth Proportional to 17,963.88, 26,870.80 and 12,626.72

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Solution

The fourth proportional to 17,963.88, 26,870.80 and 12,626.72 is: 18,887.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,963.88 : 26,870.80 = 12,626.72 : x
  2. Step 2: Convert to fraction form
    17,963.88/26,870.80 = 12,626.72/x
  3. Step 3: Cross multiply
    17,963.88x = 26,870.80 × 12,626.72
  4. Step 4: Simplify right side
    17,963.88x = 339,290,067.78
  5. Step 5: Solve for x
    x = 339,290,067.78/17,963.88
  6. Step 6: Final answer
    x = 18,887.35

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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.