Home / 28,019.20-38,668.32-16,086.40

Finding the Fourth Proportional to 28,019.20, 38,668.32 and 16,086.40

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Solution

The fourth proportional to 28,019.20, 38,668.32 and 16,086.40 is: 22,200.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.20 : 38,668.32 = 16,086.40 : x
  2. Step 2: Convert to fraction form
    28,019.20/38,668.32 = 16,086.40/x
  3. Step 3: Cross multiply
    28,019.20x = 38,668.32 × 16,086.40
  4. Step 4: Simplify right side
    28,019.20x = 622,034,062.85
  5. Step 5: Solve for x
    x = 622,034,062.85/28,019.20
  6. Step 6: Final answer
    x = 22,200.28

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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.