Home / 18,722.53-28,076.07-7,621.70

Finding the Fourth Proportional to 18,722.53, 28,076.07 and 7,621.70

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Solution

The fourth proportional to 18,722.53, 28,076.07 and 7,621.70 is: 11,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.53 : 28,076.07 = 7,621.70 : x
  2. Step 2: Convert to fraction form
    18,722.53/28,076.07 = 7,621.70/x
  3. Step 3: Cross multiply
    18,722.53x = 28,076.07 × 7,621.70
  4. Step 4: Simplify right side
    18,722.53x = 213,987,382.72
  5. Step 5: Solve for x
    x = 213,987,382.72/18,722.53
  6. Step 6: Final answer
    x = 11,429.41

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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.