Home / 19,786.41-27,292.64-13,815.90

Finding the Fourth Proportional to 19,786.41, 27,292.64 and 13,815.90

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Solution

The fourth proportional to 19,786.41, 27,292.64 and 13,815.90 is: 19,057.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.41 : 27,292.64 = 13,815.90 : x
  2. Step 2: Convert to fraction form
    19,786.41/27,292.64 = 13,815.90/x
  3. Step 3: Cross multiply
    19,786.41x = 27,292.64 × 13,815.90
  4. Step 4: Simplify right side
    19,786.41x = 377,072,315.90
  5. Step 5: Solve for x
    x = 377,072,315.90/19,786.41
  6. Step 6: Final answer
    x = 19,057.14

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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.