Home / 28,145.92-42,191.06-18,144.58

Finding the Fourth Proportional to 28,145.92, 42,191.06 and 18,144.58

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Solution

The fourth proportional to 28,145.92, 42,191.06 and 18,144.58 is: 27,198.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.92 : 42,191.06 = 18,144.58 : x
  2. Step 2: Convert to fraction form
    28,145.92/42,191.06 = 18,144.58/x
  3. Step 3: Cross multiply
    28,145.92x = 42,191.06 × 18,144.58
  4. Step 4: Simplify right side
    28,145.92x = 765,539,063.45
  5. Step 5: Solve for x
    x = 765,539,063.45/28,145.92
  6. Step 6: Final answer
    x = 27,198.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.