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Finding the Fourth Proportional to 18,803.25, 28,206.78 and 6,960.15

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Solution

The fourth proportional to 18,803.25, 28,206.78 and 6,960.15 is: 10,440.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.25 : 28,206.78 = 6,960.15 : x
  2. Step 2: Convert to fraction form
    18,803.25/28,206.78 = 6,960.15/x
  3. Step 3: Cross multiply
    18,803.25x = 28,206.78 × 6,960.15
  4. Step 4: Simplify right side
    18,803.25x = 196,323,419.82
  5. Step 5: Solve for x
    x = 196,323,419.82/18,803.25
  6. Step 6: Final answer
    x = 10,440.93

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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.