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Finding the Fourth Proportional to 18,806.37, 28,210.11 and 8,270.93

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Solution

The fourth proportional to 18,806.37, 28,210.11 and 8,270.93 is: 12,406.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.37 : 28,210.11 = 8,270.93 : x
  2. Step 2: Convert to fraction form
    18,806.37/28,210.11 = 8,270.93/x
  3. Step 3: Cross multiply
    18,806.37x = 28,210.11 × 8,270.93
  4. Step 4: Simplify right side
    18,806.37x = 233,323,683.37
  5. Step 5: Solve for x
    x = 233,323,683.37/18,806.37
  6. Step 6: Final answer
    x = 12,406.63

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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.