Home / 28,272.81-39,013.80-16,940.21

Finding the Fourth Proportional to 28,272.81, 39,013.80 and 16,940.21

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Solution

The fourth proportional to 28,272.81, 39,013.80 and 16,940.21 is: 23,375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.81 : 39,013.80 = 16,940.21 : x
  2. Step 2: Convert to fraction form
    28,272.81/39,013.80 = 16,940.21/x
  3. Step 3: Cross multiply
    28,272.81x = 39,013.80 × 16,940.21
  4. Step 4: Simplify right side
    28,272.81x = 660,901,801.59
  5. Step 5: Solve for x
    x = 660,901,801.59/28,272.81
  6. Step 6: Final answer
    x = 23,375.88

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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.