Home / 20,403.92-28,164.84-12,027.44

Finding the Fourth Proportional to 20,403.92, 28,164.84 and 12,027.44

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Solution

The fourth proportional to 20,403.92, 28,164.84 and 12,027.44 is: 16,602.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.92 : 28,164.84 = 12,027.44 : x
  2. Step 2: Convert to fraction form
    20,403.92/28,164.84 = 12,027.44/x
  3. Step 3: Cross multiply
    20,403.92x = 28,164.84 × 12,027.44
  4. Step 4: Simplify right side
    20,403.92x = 338,750,923.21
  5. Step 5: Solve for x
    x = 338,750,923.21/20,403.92
  6. Step 6: Final answer
    x = 16,602.25

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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.