Home / 23,136.56-31,982.26-20,643.38

Finding the Fourth Proportional to 23,136.56, 31,982.26 and 20,643.38

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Solution

The fourth proportional to 23,136.56, 31,982.26 and 20,643.38 is: 28,535.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,136.56 : 31,982.26 = 20,643.38 : x
  2. Step 2: Convert to fraction form
    23,136.56/31,982.26 = 20,643.38/x
  3. Step 3: Cross multiply
    23,136.56x = 31,982.26 × 20,643.38
  4. Step 4: Simplify right side
    23,136.56x = 660,221,946.44
  5. Step 5: Solve for x
    x = 660,221,946.44/23,136.56
  6. Step 6: Final answer
    x = 28,535.87

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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.