Home / 31,696.91-43,738.70-18,947.57

Finding the Fourth Proportional to 31,696.91, 43,738.70 and 18,947.57

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Solution

The fourth proportional to 31,696.91, 43,738.70 and 18,947.57 is: 26,145.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,696.91 : 43,738.70 = 18,947.57 : x
  2. Step 2: Convert to fraction form
    31,696.91/43,738.70 = 18,947.57/x
  3. Step 3: Cross multiply
    31,696.91x = 43,738.70 × 18,947.57
  4. Step 4: Simplify right side
    31,696.91x = 828,742,079.96
  5. Step 5: Solve for x
    x = 828,742,079.96/31,696.91
  6. Step 6: Final answer
    x = 26,145.83

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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.