Home / 18,768.70-28,144.75-5,618.55

Finding the Fourth Proportional to 18,768.70, 28,144.75 and 5,618.55

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Solution

The fourth proportional to 18,768.70, 28,144.75 and 5,618.55 is: 8,425.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.70 : 28,144.75 = 5,618.55 : x
  2. Step 2: Convert to fraction form
    18,768.70/28,144.75 = 5,618.55/x
  3. Step 3: Cross multiply
    18,768.70x = 28,144.75 × 5,618.55
  4. Step 4: Simplify right side
    18,768.70x = 158,132,685.11
  5. Step 5: Solve for x
    x = 158,132,685.11/18,768.70
  6. Step 6: Final answer
    x = 8,425.34

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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.