Home / 30,072.22-41,480.31-20,645.98

Finding the Fourth Proportional to 30,072.22, 41,480.31 and 20,645.98

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Solution

The fourth proportional to 30,072.22, 41,480.31 and 20,645.98 is: 28,478.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,072.22 : 41,480.31 = 20,645.98 : x
  2. Step 2: Convert to fraction form
    30,072.22/41,480.31 = 20,645.98/x
  3. Step 3: Cross multiply
    30,072.22x = 41,480.31 × 20,645.98
  4. Step 4: Simplify right side
    30,072.22x = 856,401,650.65
  5. Step 5: Solve for x
    x = 856,401,650.65/30,072.22
  6. Step 6: Final answer
    x = 28,478.17

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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.