Home / 40,728.98-61,103.03-12,647.58

Finding the Fourth Proportional to 40,728.98, 61,103.03 and 12,647.58

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Solution

The fourth proportional to 40,728.98, 61,103.03 and 12,647.58 is: 18,974.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.98 : 61,103.03 = 12,647.58 : x
  2. Step 2: Convert to fraction form
    40,728.98/61,103.03 = 12,647.58/x
  3. Step 3: Cross multiply
    40,728.98x = 61,103.03 × 12,647.58
  4. Step 4: Simplify right side
    40,728.98x = 772,805,396.93
  5. Step 5: Solve for x
    x = 772,805,396.93/40,728.98
  6. Step 6: Final answer
    x = 18,974.34

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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.