Home / 28,961.25-39,966.53-15,713.25

Finding the Fourth Proportional to 28,961.25, 39,966.53 and 15,713.25

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Solution

The fourth proportional to 28,961.25, 39,966.53 and 15,713.25 is: 21,684.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.25 : 39,966.53 = 15,713.25 : x
  2. Step 2: Convert to fraction form
    28,961.25/39,966.53 = 15,713.25/x
  3. Step 3: Cross multiply
    28,961.25x = 39,966.53 × 15,713.25
  4. Step 4: Simplify right side
    28,961.25x = 628,003,998.96
  5. Step 5: Solve for x
    x = 628,003,998.96/28,961.25
  6. Step 6: Final answer
    x = 21,684.29

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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.