Home / 18,812.39-28,219.19-6,969.15

Finding the Fourth Proportional to 18,812.39, 28,219.19 and 6,969.15

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Solution

The fourth proportional to 18,812.39, 28,219.19 and 6,969.15 is: 10,453.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.39 : 28,219.19 = 6,969.15 : x
  2. Step 2: Convert to fraction form
    18,812.39/28,219.19 = 6,969.15/x
  3. Step 3: Cross multiply
    18,812.39x = 28,219.19 × 6,969.15
  4. Step 4: Simplify right side
    18,812.39x = 196,663,733.14
  5. Step 5: Solve for x
    x = 196,663,733.14/18,812.39
  6. Step 6: Final answer
    x = 10,453.95

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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.