Home / 31,431.74-43,378.32-18,007.41

Finding the Fourth Proportional to 31,431.74, 43,378.32 and 18,007.41

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Solution

The fourth proportional to 31,431.74, 43,378.32 and 18,007.41 is: 24,851.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.74 : 43,378.32 = 18,007.41 : x
  2. Step 2: Convert to fraction form
    31,431.74/43,378.32 = 18,007.41/x
  3. Step 3: Cross multiply
    31,431.74x = 43,378.32 × 18,007.41
  4. Step 4: Simplify right side
    31,431.74x = 781,131,103.31
  5. Step 5: Solve for x
    x = 781,131,103.31/31,431.74
  6. Step 6: Final answer
    x = 24,851.67

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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.