Home / 31,231.32-43,098.46-19,136.51

Finding the Fourth Proportional to 31,231.32, 43,098.46 and 19,136.51

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Solution

The fourth proportional to 31,231.32, 43,098.46 and 19,136.51 is: 26,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,231.32 : 43,098.46 = 19,136.51 : x
  2. Step 2: Convert to fraction form
    31,231.32/43,098.46 = 19,136.51/x
  3. Step 3: Cross multiply
    31,231.32x = 43,098.46 × 19,136.51
  4. Step 4: Simplify right side
    31,231.32x = 824,753,847.44
  5. Step 5: Solve for x
    x = 824,753,847.44/31,231.32
  6. Step 6: Final answer
    x = 26,407.91

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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.