Home / 28,755.25-39,678.80-16,005.38

Finding the Fourth Proportional to 28,755.25, 39,678.80 and 16,005.38

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Solution

The fourth proportional to 28,755.25, 39,678.80 and 16,005.38 is: 22,085.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,755.25 : 39,678.80 = 16,005.38 : x
  2. Step 2: Convert to fraction form
    28,755.25/39,678.80 = 16,005.38/x
  3. Step 3: Cross multiply
    28,755.25x = 39,678.80 × 16,005.38
  4. Step 4: Simplify right side
    28,755.25x = 635,073,993.52
  5. Step 5: Solve for x
    x = 635,073,993.52/28,755.25
  6. Step 6: Final answer
    x = 22,085.50

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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.