Home / 20,964.24-31,394.52-12,172.56

Finding the Fourth Proportional to 20,964.24, 31,394.52 and 12,172.56

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Solution

The fourth proportional to 20,964.24, 31,394.52 and 12,172.56 is: 18,228.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.24 : 31,394.52 = 12,172.56 : x
  2. Step 2: Convert to fraction form
    20,964.24/31,394.52 = 12,172.56/x
  3. Step 3: Cross multiply
    20,964.24x = 31,394.52 × 12,172.56
  4. Step 4: Simplify right side
    20,964.24x = 382,151,678.37
  5. Step 5: Solve for x
    x = 382,151,678.37/20,964.24
  6. Step 6: Final answer
    x = 18,228.74

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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.