Home / 19,860.51-29,775.09-13,601.55

Finding the Fourth Proportional to 19,860.51, 29,775.09 and 13,601.55

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Solution

The fourth proportional to 19,860.51, 29,775.09 and 13,601.55 is: 20,391.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.51 : 29,775.09 = 13,601.55 : x
  2. Step 2: Convert to fraction form
    19,860.51/29,775.09 = 13,601.55/x
  3. Step 3: Cross multiply
    19,860.51x = 29,775.09 × 13,601.55
  4. Step 4: Simplify right side
    19,860.51x = 404,987,375.39
  5. Step 5: Solve for x
    x = 404,987,375.39/19,860.51
  6. Step 6: Final answer
    x = 20,391.59

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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.