Home / 30,161.91-45,185.76-20,136.43

Finding the Fourth Proportional to 30,161.91, 45,185.76 and 20,136.43

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Solution

The fourth proportional to 30,161.91, 45,185.76 and 20,136.43 is: 30,166.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,161.91 : 45,185.76 = 20,136.43 : x
  2. Step 2: Convert to fraction form
    30,161.91/45,185.76 = 20,136.43/x
  3. Step 3: Cross multiply
    30,161.91x = 45,185.76 × 20,136.43
  4. Step 4: Simplify right side
    30,161.91x = 909,879,893.24
  5. Step 5: Solve for x
    x = 909,879,893.24/30,161.91
  6. Step 6: Final answer
    x = 30,166.52

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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.