Home / 21,094.83-31,626.62-12,772.89

Finding the Fourth Proportional to 21,094.83, 31,626.62 and 12,772.89

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Solution

The fourth proportional to 21,094.83, 31,626.62 and 12,772.89 is: 19,149.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,094.83 : 31,626.62 = 12,772.89 : x
  2. Step 2: Convert to fraction form
    21,094.83/31,626.62 = 12,772.89/x
  3. Step 3: Cross multiply
    21,094.83x = 31,626.62 × 12,772.89
  4. Step 4: Simplify right side
    21,094.83x = 403,963,338.33
  5. Step 5: Solve for x
    x = 403,963,338.33/21,094.83
  6. Step 6: Final answer
    x = 19,149.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.