Home / 28,493.88-39,321.66-15,918.84

Finding the Fourth Proportional to 28,493.88, 39,321.66 and 15,918.84

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Solution

The fourth proportional to 28,493.88, 39,321.66 and 15,918.84 is: 21,968.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,493.88 : 39,321.66 = 15,918.84 : x
  2. Step 2: Convert to fraction form
    28,493.88/39,321.66 = 15,918.84/x
  3. Step 3: Cross multiply
    28,493.88x = 39,321.66 × 15,918.84
  4. Step 4: Simplify right side
    28,493.88x = 625,955,214.07
  5. Step 5: Solve for x
    x = 625,955,214.07/28,493.88
  6. Step 6: Final answer
    x = 21,968.06

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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.