Home / 28,205.46-38,923.92-15,458.43

Finding the Fourth Proportional to 28,205.46, 38,923.92 and 15,458.43

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Solution

The fourth proportional to 28,205.46, 38,923.92 and 15,458.43 is: 21,332.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205.46 : 38,923.92 = 15,458.43 : x
  2. Step 2: Convert to fraction form
    28,205.46/38,923.92 = 15,458.43/x
  3. Step 3: Cross multiply
    28,205.46x = 38,923.92 × 15,458.43
  4. Step 4: Simplify right side
    28,205.46x = 601,702,692.65
  5. Step 5: Solve for x
    x = 601,702,692.65/28,205.46
  6. Step 6: Final answer
    x = 21,332.84

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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.