Home / 18,850.86-28,276.29-7,172.28

Finding the Fourth Proportional to 18,850.86, 28,276.29 and 7,172.28

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Solution

The fourth proportional to 18,850.86, 28,276.29 and 7,172.28 is: 10,758.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,850.86 : 28,276.29 = 7,172.28 : x
  2. Step 2: Convert to fraction form
    18,850.86/28,276.29 = 7,172.28/x
  3. Step 3: Cross multiply
    18,850.86x = 28,276.29 × 7,172.28
  4. Step 4: Simplify right side
    18,850.86x = 202,805,469.24
  5. Step 5: Solve for x
    x = 202,805,469.24/18,850.86
  6. Step 6: Final answer
    x = 10,758.42

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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.