Home / 13,644.78-20,367.63-11,984.07

Finding the Fourth Proportional to 13,644.78, 20,367.63 and 11,984.07

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Solution

The fourth proportional to 13,644.78, 20,367.63 and 11,984.07 is: 17,888.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.78 : 20,367.63 = 11,984.07 : x
  2. Step 2: Convert to fraction form
    13,644.78/20,367.63 = 11,984.07/x
  3. Step 3: Cross multiply
    13,644.78x = 20,367.63 × 11,984.07
  4. Step 4: Simplify right side
    13,644.78x = 244,087,103.65
  5. Step 5: Solve for x
    x = 244,087,103.65/13,644.78
  6. Step 6: Final answer
    x = 17,888.68

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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.