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Finding the Fourth Proportional to 12,996.38, 19,503.21 and 4,788.38

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Solution

The fourth proportional to 12,996.38, 19,503.21 and 4,788.38 is: 7,185.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,996.38 : 19,503.21 = 4,788.38 : x
  2. Step 2: Convert to fraction form
    12,996.38/19,503.21 = 4,788.38/x
  3. Step 3: Cross multiply
    12,996.38x = 19,503.21 × 4,788.38
  4. Step 4: Simplify right side
    12,996.38x = 93,388,683.18
  5. Step 5: Solve for x
    x = 93,388,683.18/12,996.38
  6. Step 6: Final answer
    x = 7,185.75

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1.5x scale

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.