Home / 20,119.89-27,766.26-12,160.56

Finding the Fourth Proportional to 20,119.89, 27,766.26 and 12,160.56

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Solution

The fourth proportional to 20,119.89, 27,766.26 and 12,160.56 is: 16,782.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.89 : 27,766.26 = 12,160.56 : x
  2. Step 2: Convert to fraction form
    20,119.89/27,766.26 = 12,160.56/x
  3. Step 3: Cross multiply
    20,119.89x = 27,766.26 × 12,160.56
  4. Step 4: Simplify right side
    20,119.89x = 337,653,270.71
  5. Step 5: Solve for x
    x = 337,653,270.71/20,119.89
  6. Step 6: Final answer
    x = 16,782.06

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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.