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Finding the Fourth Proportional to 28,843.40, 43,169.10 and 20,923.40

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Solution

The fourth proportional to 28,843.40, 43,169.10 and 20,923.40 is: 31,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,843.40 : 43,169.10 = 20,923.40 : x
  2. Step 2: Convert to fraction form
    28,843.40/43,169.10 = 20,923.40/x
  3. Step 3: Cross multiply
    28,843.40x = 43,169.10 × 20,923.40
  4. Step 4: Simplify right side
    28,843.40x = 903,244,346.94
  5. Step 5: Solve for x
    x = 903,244,346.94/28,843.40
  6. Step 6: Final answer
    x = 31,315.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.