Home / 20,602.85-28,433.69-11,651.94

Finding the Fourth Proportional to 20,602.85, 28,433.69 and 11,651.94

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Solution

The fourth proportional to 20,602.85, 28,433.69 and 11,651.94 is: 16,080.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.85 : 28,433.69 = 11,651.94 : x
  2. Step 2: Convert to fraction form
    20,602.85/28,433.69 = 11,651.94/x
  3. Step 3: Cross multiply
    20,602.85x = 28,433.69 × 11,651.94
  4. Step 4: Simplify right side
    20,602.85x = 331,307,591.60
  5. Step 5: Solve for x
    x = 331,307,591.60/20,602.85
  6. Step 6: Final answer
    x = 16,080.67

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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.