Home / 20,291.68-28,000.44-13,923.73

Finding the Fourth Proportional to 20,291.68, 28,000.44 and 13,923.73

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Solution

The fourth proportional to 20,291.68, 28,000.44 and 13,923.73 is: 19,213.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.68 : 28,000.44 = 13,923.73 : x
  2. Step 2: Convert to fraction form
    20,291.68/28,000.44 = 13,923.73/x
  3. Step 3: Cross multiply
    20,291.68x = 28,000.44 × 13,923.73
  4. Step 4: Simplify right side
    20,291.68x = 389,870,566.44
  5. Step 5: Solve for x
    x = 389,870,566.44/20,291.68
  6. Step 6: Final answer
    x = 19,213.32

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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.