Home / 21,469.67-29,622.53-12,392.81

Finding the Fourth Proportional to 21,469.67, 29,622.53 and 12,392.81

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Solution

The fourth proportional to 21,469.67, 29,622.53 and 12,392.81 is: 17,098.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,469.67 : 29,622.53 = 12,392.81 : x
  2. Step 2: Convert to fraction form
    21,469.67/29,622.53 = 12,392.81/x
  3. Step 3: Cross multiply
    21,469.67x = 29,622.53 × 12,392.81
  4. Step 4: Simplify right side
    21,469.67x = 367,106,175.93
  5. Step 5: Solve for x
    x = 367,106,175.93/21,469.67
  6. Step 6: Final answer
    x = 17,098.83

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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.