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Finding the Fourth Proportional to 18,892.42, 28,328.87 and 5,563.68

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Solution

The fourth proportional to 18,892.42, 28,328.87 and 5,563.68 is: 8,342.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.42 : 28,328.87 = 5,563.68 : x
  2. Step 2: Convert to fraction form
    18,892.42/28,328.87 = 5,563.68/x
  3. Step 3: Cross multiply
    18,892.42x = 28,328.87 × 5,563.68
  4. Step 4: Simplify right side
    18,892.42x = 157,612,739.62
  5. Step 5: Solve for x
    x = 157,612,739.62/18,892.42
  6. Step 6: Final answer
    x = 8,342.64

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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.