Home / 28,758.38-39,686.56-16,183.40

Finding the Fourth Proportional to 28,758.38, 39,686.56 and 16,183.40

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Solution

The fourth proportional to 28,758.38, 39,686.56 and 16,183.40 is: 22,333.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,758.38 : 39,686.56 = 16,183.40 : x
  2. Step 2: Convert to fraction form
    28,758.38/39,686.56 = 16,183.40/x
  3. Step 3: Cross multiply
    28,758.38x = 39,686.56 × 16,183.40
  4. Step 4: Simplify right side
    28,758.38x = 642,263,236.21
  5. Step 5: Solve for x
    x = 642,263,236.21/28,758.38
  6. Step 6: Final answer
    x = 22,333.09

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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.