Home / 20,668.46-28,140.89-20,602.85

Finding the Fourth Proportional to 20,668.46, 28,140.89 and 20,602.85

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Solution

The fourth proportional to 20,668.46, 28,140.89 and 20,602.85 is: 28,051.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.46 : 28,140.89 = 20,602.85 : x
  2. Step 2: Convert to fraction form
    20,668.46/28,140.89 = 20,602.85/x
  3. Step 3: Cross multiply
    20,668.46x = 28,140.89 × 20,602.85
  4. Step 4: Simplify right side
    20,668.46x = 579,782,535.54
  5. Step 5: Solve for x
    x = 579,782,535.54/20,668.46
  6. Step 6: Final answer
    x = 28,051.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.