Home / 20,649.09-28,496.43-12,149.67

Finding the Fourth Proportional to 20,649.09, 28,496.43 and 12,149.67

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Solution

The fourth proportional to 20,649.09, 28,496.43 and 12,149.67 is: 16,766.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.09 : 28,496.43 = 12,149.67 : x
  2. Step 2: Convert to fraction form
    20,649.09/28,496.43 = 12,149.67/x
  3. Step 3: Cross multiply
    20,649.09x = 28,496.43 × 12,149.67
  4. Step 4: Simplify right side
    20,649.09x = 346,222,220.68
  5. Step 5: Solve for x
    x = 346,222,220.68/20,649.09
  6. Step 6: Final answer
    x = 16,766.95

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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.