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Finding the Fourth Proportional to 19,198.80, 26,504.80 and 13,262.40

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Solution

The fourth proportional to 19,198.80, 26,504.80 and 13,262.40 is: 18,309.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,198.80 : 26,504.80 = 13,262.40 : x
  2. Step 2: Convert to fraction form
    19,198.80/26,504.80 = 13,262.40/x
  3. Step 3: Cross multiply
    19,198.80x = 26,504.80 × 13,262.40
  4. Step 4: Simplify right side
    19,198.80x = 351,517,259.52
  5. Step 5: Solve for x
    x = 351,517,259.52/19,198.80
  6. Step 6: Final answer
    x = 18,309.33

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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.