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Finding the Fourth Proportional to 16,218.98, 22,372.05 and 12,435.98

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Solution

The fourth proportional to 16,218.98, 22,372.05 and 12,435.98 is: 17,153.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,218.98 : 22,372.05 = 12,435.98 : x
  2. Step 2: Convert to fraction form
    16,218.98/22,372.05 = 12,435.98/x
  3. Step 3: Cross multiply
    16,218.98x = 22,372.05 × 12,435.98
  4. Step 4: Simplify right side
    16,218.98x = 278,218,366.36
  5. Step 5: Solve for x
    x = 278,218,366.36/16,218.98
  6. Step 6: Final answer
    x = 17,153.88

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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.