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Finding the Fourth Proportional to 18,743.24, 28,114.83 and 4,892.24

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Solution

The fourth proportional to 18,743.24, 28,114.83 and 4,892.24 is: 7,338.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.24 : 28,114.83 = 4,892.24 : x
  2. Step 2: Convert to fraction form
    18,743.24/28,114.83 = 4,892.24/x
  3. Step 3: Cross multiply
    18,743.24x = 28,114.83 × 4,892.24
  4. Step 4: Simplify right side
    18,743.24x = 137,544,355.35
  5. Step 5: Solve for x
    x = 137,544,355.35/18,743.24
  6. Step 6: Final answer
    x = 7,338.35

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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.