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Finding the Fourth Proportional to 16,393.19, 22,622.09 and 9,321.89

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Solution

The fourth proportional to 16,393.19, 22,622.09 and 9,321.89 is: 12,863.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,393.19 : 22,622.09 = 9,321.89 : x
  2. Step 2: Convert to fraction form
    16,393.19/22,622.09 = 9,321.89/x
  3. Step 3: Cross multiply
    16,393.19x = 22,622.09 × 9,321.89
  4. Step 4: Simplify right side
    16,393.19x = 210,880,474.83
  5. Step 5: Solve for x
    x = 210,880,474.83/16,393.19
  6. Step 6: Final answer
    x = 12,863.91

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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.