Home / 20,185.65-27,855.82-11,233.07

Finding the Fourth Proportional to 20,185.65, 27,855.82 and 11,233.07

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Solution

The fourth proportional to 20,185.65, 27,855.82 and 11,233.07 is: 15,501.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.65 : 27,855.82 = 11,233.07 : x
  2. Step 2: Convert to fraction form
    20,185.65/27,855.82 = 11,233.07/x
  3. Step 3: Cross multiply
    20,185.65x = 27,855.82 × 11,233.07
  4. Step 4: Simplify right side
    20,185.65x = 312,906,355.19
  5. Step 5: Solve for x
    x = 312,906,355.19/20,185.65
  6. Step 6: Final answer
    x = 15,501.43

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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.