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Finding the Fourth Proportional to 18,808.45, 28,213.08 and 6,962.81

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Solution

The fourth proportional to 18,808.45, 28,213.08 and 6,962.81 is: 10,444.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.45 : 28,213.08 = 6,962.81 : x
  2. Step 2: Convert to fraction form
    18,808.45/28,213.08 = 6,962.81/x
  3. Step 3: Cross multiply
    18,808.45x = 28,213.08 × 6,962.81
  4. Step 4: Simplify right side
    18,808.45x = 196,442,245.02
  5. Step 5: Solve for x
    x = 196,442,245.02/18,808.45
  6. Step 6: Final answer
    x = 10,444.36

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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.