Home / 13,137.98-19,701.12-4,815.80

Finding the Fourth Proportional to 13,137.98, 19,701.12 and 4,815.80

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Solution

The fourth proportional to 13,137.98, 19,701.12 and 4,815.80 is: 7,221.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.98 : 19,701.12 = 4,815.80 : x
  2. Step 2: Convert to fraction form
    13,137.98/19,701.12 = 4,815.80/x
  3. Step 3: Cross multiply
    13,137.98x = 19,701.12 × 4,815.80
  4. Step 4: Simplify right side
    13,137.98x = 94,876,653.70
  5. Step 5: Solve for x
    x = 94,876,653.70/13,137.98
  6. Step 6: Final answer
    x = 7,221.56

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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.