Home / 20,650.09-28,497.81-12,150.67

Finding the Fourth Proportional to 20,650.09, 28,497.81 and 12,150.67

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Solution

The fourth proportional to 20,650.09, 28,497.81 and 12,150.67 is: 16,768.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.09 : 28,497.81 = 12,150.67 : x
  2. Step 2: Convert to fraction form
    20,650.09/28,497.81 = 12,150.67/x
  3. Step 3: Cross multiply
    20,650.09x = 28,497.81 × 12,150.67
  4. Step 4: Simplify right side
    20,650.09x = 346,267,485.03
  5. Step 5: Solve for x
    x = 346,267,485.03/20,650.09
  6. Step 6: Final answer
    x = 16,768.33

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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.