Home / 18,968.66-28,453.71-7,121.27

Finding the Fourth Proportional to 18,968.66, 28,453.71 and 7,121.27

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Solution

The fourth proportional to 18,968.66, 28,453.71 and 7,121.27 is: 10,682.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.66 : 28,453.71 = 7,121.27 : x
  2. Step 2: Convert to fraction form
    18,968.66/28,453.71 = 7,121.27/x
  3. Step 3: Cross multiply
    18,968.66x = 28,453.71 × 7,121.27
  4. Step 4: Simplify right side
    18,968.66x = 202,626,429.11
  5. Step 5: Solve for x
    x = 202,626,429.11/18,968.66
  6. Step 6: Final answer
    x = 10,682.17

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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.