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Finding the Fourth Proportional to 12,018.16, 16,586.94 and 6,982.39

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Solution

The fourth proportional to 12,018.16, 16,586.94 and 6,982.39 is: 9,636.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.16 : 16,586.94 = 6,982.39 : x
  2. Step 2: Convert to fraction form
    12,018.16/16,586.94 = 6,982.39/x
  3. Step 3: Cross multiply
    12,018.16x = 16,586.94 × 6,982.39
  4. Step 4: Simplify right side
    12,018.16x = 115,816,483.99
  5. Step 5: Solve for x
    x = 115,816,483.99/12,018.16
  6. Step 6: Final answer
    x = 9,636.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.