Home / 28,751.28-39,670.20-16,171.44

Finding the Fourth Proportional to 28,751.28, 39,670.20 and 16,171.44

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Solution

The fourth proportional to 28,751.28, 39,670.20 and 16,171.44 is: 22,312.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.28 : 39,670.20 = 16,171.44 : x
  2. Step 2: Convert to fraction form
    28,751.28/39,670.20 = 16,171.44/x
  3. Step 3: Cross multiply
    28,751.28x = 39,670.20 × 16,171.44
  4. Step 4: Simplify right side
    28,751.28x = 641,524,259.09
  5. Step 5: Solve for x
    x = 641,524,259.09/28,751.28
  6. Step 6: Final answer
    x = 22,312.89

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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.