Home / 27,661.14-38,160.21-18,705.42

Finding the Fourth Proportional to 27,661.14, 38,160.21 and 18,705.42

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Solution

The fourth proportional to 27,661.14, 38,160.21 and 18,705.42 is: 25,805.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,661.14 : 38,160.21 = 18,705.42 : x
  2. Step 2: Convert to fraction form
    27,661.14/38,160.21 = 18,705.42/x
  3. Step 3: Cross multiply
    27,661.14x = 38,160.21 × 18,705.42
  4. Step 4: Simplify right side
    27,661.14x = 713,802,755.34
  5. Step 5: Solve for x
    x = 713,802,755.34/27,661.14
  6. Step 6: Final answer
    x = 25,805.25

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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.