Home / 27,172.18-40,820.82-19,185.40

Finding the Fourth Proportional to 27,172.18, 40,820.82 and 19,185.40

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Solution

The fourth proportional to 27,172.18, 40,820.82 and 19,185.40 is: 28,822.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,172.18 : 40,820.82 = 19,185.40 : x
  2. Step 2: Convert to fraction form
    27,172.18/40,820.82 = 19,185.40/x
  3. Step 3: Cross multiply
    27,172.18x = 40,820.82 × 19,185.40
  4. Step 4: Simplify right side
    27,172.18x = 783,163,760.03
  5. Step 5: Solve for x
    x = 783,163,760.03/27,172.18
  6. Step 6: Final answer
    x = 28,822.26

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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.