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Finding the Fourth Proportional to 19,543, 26,991.62 and 13,244.44

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Solution

The fourth proportional to 19,543, 26,991.62 and 13,244.44 is: 18,292.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,543 : 26,991.62 = 13,244.44 : x
  2. Step 2: Convert to fraction form
    19,543/26,991.62 = 13,244.44/x
  3. Step 3: Cross multiply
    19,543x = 26,991.62 × 13,244.44
  4. Step 4: Simplify right side
    19,543x = 357,488,825.37
  5. Step 5: Solve for x
    x = 357,488,825.37/19,543
  6. Step 6: Final answer
    x = 18,292.42

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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.