Home / 19,119.89-28,638.02-13,556.36

Finding the Fourth Proportional to 19,119.89, 28,638.02 and 13,556.36

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Solution

The fourth proportional to 19,119.89, 28,638.02 and 13,556.36 is: 20,304.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,119.89 : 28,638.02 = 13,556.36 : x
  2. Step 2: Convert to fraction form
    19,119.89/28,638.02 = 13,556.36/x
  3. Step 3: Cross multiply
    19,119.89x = 28,638.02 × 13,556.36
  4. Step 4: Simplify right side
    19,119.89x = 388,227,414.29
  5. Step 5: Solve for x
    x = 388,227,414.29/19,119.89
  6. Step 6: Final answer
    x = 20,304.90

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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.