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Finding the Fourth Proportional to 12,603.92, 18,887.22 and 11,219.84

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Solution

The fourth proportional to 12,603.92, 18,887.22 and 11,219.84 is: 16,813.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.92 : 18,887.22 = 11,219.84 : x
  2. Step 2: Convert to fraction form
    12,603.92/18,887.22 = 11,219.84/x
  3. Step 3: Cross multiply
    12,603.92x = 18,887.22 × 11,219.84
  4. Step 4: Simplify right side
    12,603.92x = 211,911,586.44
  5. Step 5: Solve for x
    x = 211,911,586.44/12,603.92
  6. Step 6: Final answer
    x = 16,813.15

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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.