Home / 20,878.75-31,344.84-17,936.02

Finding the Fourth Proportional to 20,878.75, 31,344.84 and 17,936.02

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Solution

The fourth proportional to 20,878.75, 31,344.84 and 17,936.02 is: 26,926.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878.75 : 31,344.84 = 17,936.02 : x
  2. Step 2: Convert to fraction form
    20,878.75/31,344.84 = 17,936.02/x
  3. Step 3: Cross multiply
    20,878.75x = 31,344.84 × 17,936.02
  4. Step 4: Simplify right side
    20,878.75x = 562,201,520.41
  5. Step 5: Solve for x
    x = 562,201,520.41/20,878.75
  6. Step 6: Final answer
    x = 26,926.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.