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Finding the Fourth Proportional to 18,808.50, 28,232.60 and 18,384.87

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Solution

The fourth proportional to 18,808.50, 28,232.60 and 18,384.87 is: 27,596.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.50 : 28,232.60 = 18,384.87 : x
  2. Step 2: Convert to fraction form
    18,808.50/28,232.60 = 18,384.87/x
  3. Step 3: Cross multiply
    18,808.50x = 28,232.60 × 18,384.87
  4. Step 4: Simplify right side
    18,808.50x = 519,052,680.76
  5. Step 5: Solve for x
    x = 519,052,680.76/18,808.50
  6. Step 6: Final answer
    x = 27,596.71

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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.