Home / 12,930.39-19,394.49-5,137.11

Finding the Fourth Proportional to 12,930.39, 19,394.49 and 5,137.11

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Solution

The fourth proportional to 12,930.39, 19,394.49 and 5,137.11 is: 7,705.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.39 : 19,394.49 = 5,137.11 : x
  2. Step 2: Convert to fraction form
    12,930.39/19,394.49 = 5,137.11/x
  3. Step 3: Cross multiply
    12,930.39x = 19,394.49 × 5,137.11
  4. Step 4: Simplify right side
    12,930.39x = 99,631,628.52
  5. Step 5: Solve for x
    x = 99,631,628.52/12,930.39
  6. Step 6: Final answer
    x = 7,705.23

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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.