Home / 12,960.05-19,338.97-11,563.79

Finding the Fourth Proportional to 12,960.05, 19,338.97 and 11,563.79

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Solution

The fourth proportional to 12,960.05, 19,338.97 and 11,563.79 is: 17,255.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960.05 : 19,338.97 = 11,563.79 : x
  2. Step 2: Convert to fraction form
    12,960.05/19,338.97 = 11,563.79/x
  3. Step 3: Cross multiply
    12,960.05x = 19,338.97 × 11,563.79
  4. Step 4: Simplify right side
    12,960.05x = 223,631,787.90
  5. Step 5: Solve for x
    x = 223,631,787.90/12,960.05
  6. Step 6: Final answer
    x = 17,255.47

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.