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Finding the Fourth Proportional to 18,892.20, 28,271.10 and 16,453.80

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Solution

The fourth proportional to 18,892.20, 28,271.10 and 16,453.80 is: 24,622.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.20 : 28,271.10 = 16,453.80 : x
  2. Step 2: Convert to fraction form
    18,892.20/28,271.10 = 16,453.80/x
  3. Step 3: Cross multiply
    18,892.20x = 28,271.10 × 16,453.80
  4. Step 4: Simplify right side
    18,892.20x = 465,167,025.18
  5. Step 5: Solve for x
    x = 465,167,025.18/18,892.20
  6. Step 6: Final answer
    x = 24,622.17

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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.