Home / 31,838.09-43,922.93-19,880.67

Finding the Fourth Proportional to 31,838.09, 43,922.93 and 19,880.67

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Solution

The fourth proportional to 31,838.09, 43,922.93 and 19,880.67 is: 27,426.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,838.09 : 43,922.93 = 19,880.67 : x
  2. Step 2: Convert to fraction form
    31,838.09/43,922.93 = 19,880.67/x
  3. Step 3: Cross multiply
    31,838.09x = 43,922.93 × 19,880.67
  4. Step 4: Simplify right side
    31,838.09x = 873,217,106.85
  5. Step 5: Solve for x
    x = 873,217,106.85/31,838.09
  6. Step 6: Final answer
    x = 27,426.81

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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.