Home / 21,180.70-31,764.55-7,136.97

Finding the Fourth Proportional to 21,180.70, 31,764.55 and 7,136.97

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Solution

The fourth proportional to 21,180.70, 31,764.55 and 7,136.97 is: 10,703.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.70 : 31,764.55 = 7,136.97 : x
  2. Step 2: Convert to fraction form
    21,180.70/31,764.55 = 7,136.97/x
  3. Step 3: Cross multiply
    21,180.70x = 31,764.55 × 7,136.97
  4. Step 4: Simplify right side
    21,180.70x = 226,702,640.41
  5. Step 5: Solve for x
    x = 226,702,640.41/21,180.70
  6. Step 6: Final answer
    x = 10,703.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.