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Finding the Fourth Proportional to 18,481.36, 27,722.08 and 4,630.40

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Solution

The fourth proportional to 18,481.36, 27,722.08 and 4,630.40 is: 6,945.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.36 : 27,722.08 = 4,630.40 : x
  2. Step 2: Convert to fraction form
    18,481.36/27,722.08 = 4,630.40/x
  3. Step 3: Cross multiply
    18,481.36x = 27,722.08 × 4,630.40
  4. Step 4: Simplify right side
    18,481.36x = 128,364,319.23
  5. Step 5: Solve for x
    x = 128,364,319.23/18,481.36
  6. Step 6: Final answer
    x = 6,945.61

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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.