Home / 31,940.94-47,911.42-12,225.54

Finding the Fourth Proportional to 31,940.94, 47,911.42 and 12,225.54

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Solution

The fourth proportional to 31,940.94, 47,911.42 and 12,225.54 is: 18,338.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,940.94 : 47,911.42 = 12,225.54 : x
  2. Step 2: Convert to fraction form
    31,940.94/47,911.42 = 12,225.54/x
  3. Step 3: Cross multiply
    31,940.94x = 47,911.42 × 12,225.54
  4. Step 4: Simplify right side
    31,940.94x = 585,742,981.67
  5. Step 5: Solve for x
    x = 585,742,981.67/31,940.94
  6. Step 6: Final answer
    x = 18,338.31

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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.