Home / 20,890.20-28,814.22-14,173.68

Finding the Fourth Proportional to 20,890.20, 28,814.22 and 14,173.68

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Solution

The fourth proportional to 20,890.20, 28,814.22 and 14,173.68 is: 19,550.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890.20 : 28,814.22 = 14,173.68 : x
  2. Step 2: Convert to fraction form
    20,890.20/28,814.22 = 14,173.68/x
  3. Step 3: Cross multiply
    20,890.20x = 28,814.22 × 14,173.68
  4. Step 4: Simplify right side
    20,890.20x = 408,403,533.73
  5. Step 5: Solve for x
    x = 408,403,533.73/20,890.20
  6. Step 6: Final answer
    x = 19,550.01

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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.