Home / 16,391.76-22,622.62-9,318.84

Finding the Fourth Proportional to 16,391.76, 22,622.62 and 9,318.84

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Solution

The fourth proportional to 16,391.76, 22,622.62 and 9,318.84 is: 12,861.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,391.76 : 22,622.62 = 9,318.84 : x
  2. Step 2: Convert to fraction form
    16,391.76/22,622.62 = 9,318.84/x
  3. Step 3: Cross multiply
    16,391.76x = 22,622.62 × 9,318.84
  4. Step 4: Simplify right side
    16,391.76x = 210,816,576.16
  5. Step 5: Solve for x
    x = 210,816,576.16/16,391.76
  6. Step 6: Final answer
    x = 12,861.13

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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.