Home / 19,131.85-26,402.25-11,172.79

Finding the Fourth Proportional to 19,131.85, 26,402.25 and 11,172.79

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Solution

The fourth proportional to 19,131.85, 26,402.25 and 11,172.79 is: 15,418.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.85 : 26,402.25 = 11,172.79 : x
  2. Step 2: Convert to fraction form
    19,131.85/26,402.25 = 11,172.79/x
  3. Step 3: Cross multiply
    19,131.85x = 26,402.25 × 11,172.79
  4. Step 4: Simplify right side
    19,131.85x = 294,986,794.78
  5. Step 5: Solve for x
    x = 294,986,794.78/19,131.85
  6. Step 6: Final answer
    x = 15,418.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.