Home / 19,786.26-27,318.40-12,620.18

Finding the Fourth Proportional to 19,786.26, 27,318.40 and 12,620.18

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Solution

The fourth proportional to 19,786.26, 27,318.40 and 12,620.18 is: 17,424.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.26 : 27,318.40 = 12,620.18 : x
  2. Step 2: Convert to fraction form
    19,786.26/27,318.40 = 12,620.18/x
  3. Step 3: Cross multiply
    19,786.26x = 27,318.40 × 12,620.18
  4. Step 4: Simplify right side
    19,786.26x = 344,763,125.31
  5. Step 5: Solve for x
    x = 344,763,125.31/19,786.26
  6. Step 6: Final answer
    x = 17,424.37

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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.