Home / 28,015.20-38,662.80-16,082.40

Finding the Fourth Proportional to 28,015.20, 38,662.80 and 16,082.40

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Solution

The fourth proportional to 28,015.20, 38,662.80 and 16,082.40 is: 22,194.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.20 : 38,662.80 = 16,082.40 : x
  2. Step 2: Convert to fraction form
    28,015.20/38,662.80 = 16,082.40/x
  3. Step 3: Cross multiply
    28,015.20x = 38,662.80 × 16,082.40
  4. Step 4: Simplify right side
    28,015.20x = 621,790,614.72
  5. Step 5: Solve for x
    x = 621,790,614.72/28,015.20
  6. Step 6: Final answer
    x = 22,194.76

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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.