Home / 28,081.14-38,735.73-18,145.14

Finding the Fourth Proportional to 28,081.14, 38,735.73 and 18,145.14

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Solution

The fourth proportional to 28,081.14, 38,735.73 and 18,145.14 is: 25,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.14 : 38,735.73 = 18,145.14 : x
  2. Step 2: Convert to fraction form
    28,081.14/38,735.73 = 18,145.14/x
  3. Step 3: Cross multiply
    28,081.14x = 38,735.73 × 18,145.14
  4. Step 4: Simplify right side
    28,081.14x = 702,865,243.85
  5. Step 5: Solve for x
    x = 702,865,243.85/28,081.14
  6. Step 6: Final answer
    x = 25,029.80

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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.