Home / 28,974.32-39,977.70-16,399.07

Finding the Fourth Proportional to 28,974.32, 39,977.70 and 16,399.07

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Solution

The fourth proportional to 28,974.32, 39,977.70 and 16,399.07 is: 22,626.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974.32 : 39,977.70 = 16,399.07 : x
  2. Step 2: Convert to fraction form
    28,974.32/39,977.70 = 16,399.07/x
  3. Step 3: Cross multiply
    28,974.32x = 39,977.70 × 16,399.07
  4. Step 4: Simplify right side
    28,974.32x = 655,597,037.31
  5. Step 5: Solve for x
    x = 655,597,037.31/28,974.32
  6. Step 6: Final answer
    x = 22,626.83

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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.