Home / 19,980.14-29,960.94-11,662.55

Finding the Fourth Proportional to 19,980.14, 29,960.94 and 11,662.55

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Solution

The fourth proportional to 19,980.14, 29,960.94 and 11,662.55 is: 17,488.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.14 : 29,960.94 = 11,662.55 : x
  2. Step 2: Convert to fraction form
    19,980.14/29,960.94 = 11,662.55/x
  3. Step 3: Cross multiply
    19,980.14x = 29,960.94 × 11,662.55
  4. Step 4: Simplify right side
    19,980.14x = 349,420,960.80
  5. Step 5: Solve for x
    x = 349,420,960.80/19,980.14
  6. Step 6: Final answer
    x = 17,488.41

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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.