Home / 31,790.99-43,869.53-19,853.62

Finding the Fourth Proportional to 31,790.99, 43,869.53 and 19,853.62

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Solution

The fourth proportional to 31,790.99, 43,869.53 and 19,853.62 is: 27,396.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,790.99 : 43,869.53 = 19,853.62 : x
  2. Step 2: Convert to fraction form
    31,790.99/43,869.53 = 19,853.62/x
  3. Step 3: Cross multiply
    31,790.99x = 43,869.53 × 19,853.62
  4. Step 4: Simplify right side
    31,790.99x = 870,968,659.58
  5. Step 5: Solve for x
    x = 870,968,659.58/31,790.99
  6. Step 6: Final answer
    x = 27,396.71

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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.