Home / 28,081.75-38,752.82-18,145.75

Finding the Fourth Proportional to 28,081.75, 38,752.82 and 18,145.75

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Solution

The fourth proportional to 28,081.75, 38,752.82 and 18,145.75 is: 25,041.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.75 : 38,752.82 = 18,145.75 : x
  2. Step 2: Convert to fraction form
    28,081.75/38,752.82 = 18,145.75/x
  3. Step 3: Cross multiply
    28,081.75x = 38,752.82 × 18,145.75
  4. Step 4: Simplify right side
    28,081.75x = 703,198,983.52
  5. Step 5: Solve for x
    x = 703,198,983.52/28,081.75
  6. Step 6: Final answer
    x = 25,041.14

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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.