Home / 20,200.37-27,890.19-12,649.73

Finding the Fourth Proportional to 20,200.37, 27,890.19 and 12,649.73

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Solution

The fourth proportional to 20,200.37, 27,890.19 and 12,649.73 is: 17,465.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.37 : 27,890.19 = 12,649.73 : x
  2. Step 2: Convert to fraction form
    20,200.37/27,890.19 = 12,649.73/x
  3. Step 3: Cross multiply
    20,200.37x = 27,890.19 × 12,649.73
  4. Step 4: Simplify right side
    20,200.37x = 352,803,233.70
  5. Step 5: Solve for x
    x = 352,803,233.70/20,200.37
  6. Step 6: Final answer
    x = 17,465.19

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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.