Home / 20,974.90-31,462.31-14,381.09

Finding the Fourth Proportional to 20,974.90, 31,462.31 and 14,381.09

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Solution

The fourth proportional to 20,974.90, 31,462.31 and 14,381.09 is: 21,571.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.90 : 31,462.31 = 14,381.09 : x
  2. Step 2: Convert to fraction form
    20,974.90/31,462.31 = 14,381.09/x
  3. Step 3: Cross multiply
    20,974.90x = 31,462.31 × 14,381.09
  4. Step 4: Simplify right side
    20,974.90x = 452,462,426.33
  5. Step 5: Solve for x
    x = 452,462,426.33/20,974.90
  6. Step 6: Final answer
    x = 21,571.62

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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.