Home / 21,241.89-31,868.24-19,907.73

Finding the Fourth Proportional to 21,241.89, 31,868.24 and 19,907.73

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Solution

The fourth proportional to 21,241.89, 31,868.24 and 19,907.73 is: 29,866.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.89 : 31,868.24 = 19,907.73 : x
  2. Step 2: Convert to fraction form
    21,241.89/31,868.24 = 19,907.73/x
  3. Step 3: Cross multiply
    21,241.89x = 31,868.24 × 19,907.73
  4. Step 4: Simplify right side
    21,241.89x = 634,424,217.96
  5. Step 5: Solve for x
    x = 634,424,217.96/21,241.89
  6. Step 6: Final answer
    x = 29,866.66

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1.5x scale

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.