Home / 21,786.90-29,992.23-19,548.06

Finding the Fourth Proportional to 21,786.90, 29,992.23 and 19,548.06

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Solution

The fourth proportional to 21,786.90, 29,992.23 and 19,548.06 is: 26,910.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.90 : 29,992.23 = 19,548.06 : x
  2. Step 2: Convert to fraction form
    21,786.90/29,992.23 = 19,548.06/x
  3. Step 3: Cross multiply
    21,786.90x = 29,992.23 × 19,548.06
  4. Step 4: Simplify right side
    21,786.90x = 586,289,911.57
  5. Step 5: Solve for x
    x = 586,289,911.57/21,786.90
  6. Step 6: Final answer
    x = 26,910.20

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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.