Home / 28,316.25-39,076.43-15,743.43

Finding the Fourth Proportional to 28,316.25, 39,076.43 and 15,743.43

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Solution

The fourth proportional to 28,316.25, 39,076.43 and 15,743.43 is: 21,725.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.25 : 39,076.43 = 15,743.43 : x
  2. Step 2: Convert to fraction form
    28,316.25/39,076.43 = 15,743.43/x
  3. Step 3: Cross multiply
    28,316.25x = 39,076.43 × 15,743.43
  4. Step 4: Simplify right side
    28,316.25x = 615,196,961.64
  5. Step 5: Solve for x
    x = 615,196,961.64/28,316.25
  6. Step 6: Final answer
    x = 21,725.93

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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.