Home / 23,121.82-31,900.31-15,051.79

Finding the Fourth Proportional to 23,121.82, 31,900.31 and 15,051.79

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Solution

The fourth proportional to 23,121.82, 31,900.31 and 15,051.79 is: 20,766.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121.82 : 31,900.31 = 15,051.79 : x
  2. Step 2: Convert to fraction form
    23,121.82/31,900.31 = 15,051.79/x
  3. Step 3: Cross multiply
    23,121.82x = 31,900.31 × 15,051.79
  4. Step 4: Simplify right side
    23,121.82x = 480,156,788.12
  5. Step 5: Solve for x
    x = 480,156,788.12/23,121.82
  6. Step 6: Final answer
    x = 20,766.39

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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.