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Finding the Fourth Proportional to 16,138.22, 22,210.06 and 13,653

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Solution

The fourth proportional to 16,138.22, 22,210.06 and 13,653 is: 18,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,138.22 : 22,210.06 = 13,653 : x
  2. Step 2: Convert to fraction form
    16,138.22/22,210.06 = 13,653/x
  3. Step 3: Cross multiply
    16,138.22x = 22,210.06 × 13,653
  4. Step 4: Simplify right side
    16,138.22x = 303,233,949.18
  5. Step 5: Solve for x
    x = 303,233,949.18/16,138.22
  6. Step 6: Final answer
    x = 18,789.80

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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.