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Finding the Fourth Proportional to 18,319.14, 27,478.74 and 6,629.64

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Solution

The fourth proportional to 18,319.14, 27,478.74 and 6,629.64 is: 9,944.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,319.14 : 27,478.74 = 6,629.64 : x
  2. Step 2: Convert to fraction form
    18,319.14/27,478.74 = 6,629.64/x
  3. Step 3: Cross multiply
    18,319.14x = 27,478.74 × 6,629.64
  4. Step 4: Simplify right side
    18,319.14x = 182,174,153.85
  5. Step 5: Solve for x
    x = 182,174,153.85/18,319.14
  6. Step 6: Final answer
    x = 9,944.47

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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.