Home / 31,256.44-43,136.82-18,680.92

Finding the Fourth Proportional to 31,256.44, 43,136.82 and 18,680.92

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Solution

The fourth proportional to 31,256.44, 43,136.82 and 18,680.92 is: 25,781.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,256.44 : 43,136.82 = 18,680.92 : x
  2. Step 2: Convert to fraction form
    31,256.44/43,136.82 = 18,680.92/x
  3. Step 3: Cross multiply
    31,256.44x = 43,136.82 × 18,680.92
  4. Step 4: Simplify right side
    31,256.44x = 805,835,483.47
  5. Step 5: Solve for x
    x = 805,835,483.47/31,256.44
  6. Step 6: Final answer
    x = 25,781.42

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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.