Home / 31,571.28-43,573.32-19,478.82

Finding the Fourth Proportional to 31,571.28, 43,573.32 and 19,478.82

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Solution

The fourth proportional to 31,571.28, 43,573.32 and 19,478.82 is: 26,883.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,571.28 : 43,573.32 = 19,478.82 : x
  2. Step 2: Convert to fraction form
    31,571.28/43,573.32 = 19,478.82/x
  3. Step 3: Cross multiply
    31,571.28x = 43,573.32 × 19,478.82
  4. Step 4: Simplify right side
    31,571.28x = 848,756,857.08
  5. Step 5: Solve for x
    x = 848,756,857.08/31,571.28
  6. Step 6: Final answer
    x = 26,883.83

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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.