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Finding the Fourth Proportional to 16,405.92, 22,639.68 and 9,333.36

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Solution

The fourth proportional to 16,405.92, 22,639.68 and 9,333.36 is: 12,879.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,405.92 : 22,639.68 = 9,333.36 : x
  2. Step 2: Convert to fraction form
    16,405.92/22,639.68 = 9,333.36/x
  3. Step 3: Cross multiply
    16,405.92x = 22,639.68 × 9,333.36
  4. Step 4: Simplify right side
    16,405.92x = 211,304,283.72
  5. Step 5: Solve for x
    x = 211,304,283.72/16,405.92
  6. Step 6: Final answer
    x = 12,879.76

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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.