Home / 31,211.26-43,072.30-18,946.81

Finding the Fourth Proportional to 31,211.26, 43,072.30 and 18,946.81

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Solution

The fourth proportional to 31,211.26, 43,072.30 and 18,946.81 is: 26,147.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,211.26 : 43,072.30 = 18,946.81 : x
  2. Step 2: Convert to fraction form
    31,211.26/43,072.30 = 18,946.81/x
  3. Step 3: Cross multiply
    31,211.26x = 43,072.30 × 18,946.81
  4. Step 4: Simplify right side
    31,211.26x = 816,082,529.32
  5. Step 5: Solve for x
    x = 816,082,529.32/31,211.26
  6. Step 6: Final answer
    x = 26,147.06

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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.