Home / 28,917.69-39,905.82-16,171.08

Finding the Fourth Proportional to 28,917.69, 39,905.82 and 16,171.08

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Solution

The fourth proportional to 28,917.69, 39,905.82 and 16,171.08 is: 22,315.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.69 : 39,905.82 = 16,171.08 : x
  2. Step 2: Convert to fraction form
    28,917.69/39,905.82 = 16,171.08/x
  3. Step 3: Cross multiply
    28,917.69x = 39,905.82 × 16,171.08
  4. Step 4: Simplify right side
    28,917.69x = 645,320,207.69
  5. Step 5: Solve for x
    x = 645,320,207.69/28,917.69
  6. Step 6: Final answer
    x = 22,315.76

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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.