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Finding the Fourth Proportional to 30,640.33, 45,946.14 and 18,162.12

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Solution

The fourth proportional to 30,640.33, 45,946.14 and 18,162.12 is: 27,234.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640.33 : 45,946.14 = 18,162.12 : x
  2. Step 2: Convert to fraction form
    30,640.33/45,946.14 = 18,162.12/x
  3. Step 3: Cross multiply
    30,640.33x = 45,946.14 × 18,162.12
  4. Step 4: Simplify right side
    30,640.33x = 834,479,412.41
  5. Step 5: Solve for x
    x = 834,479,412.41/30,640.33
  6. Step 6: Final answer
    x = 27,234.68

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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.