Home / 31,364.69-43,283.34-18,620.43

Finding the Fourth Proportional to 31,364.69, 43,283.34 and 18,620.43

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Solution

The fourth proportional to 31,364.69, 43,283.34 and 18,620.43 is: 25,696.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,364.69 : 43,283.34 = 18,620.43 : x
  2. Step 2: Convert to fraction form
    31,364.69/43,283.34 = 18,620.43/x
  3. Step 3: Cross multiply
    31,364.69x = 43,283.34 × 18,620.43
  4. Step 4: Simplify right side
    31,364.69x = 805,954,309.53
  5. Step 5: Solve for x
    x = 805,954,309.53/31,364.69
  6. Step 6: Final answer
    x = 25,696.23

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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.