Home / 19,680.05-27,144.96-11,716.13

Finding the Fourth Proportional to 19,680.05, 27,144.96 and 11,716.13

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Solution

The fourth proportional to 19,680.05, 27,144.96 and 11,716.13 is: 16,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.05 : 27,144.96 = 11,716.13 : x
  2. Step 2: Convert to fraction form
    19,680.05/27,144.96 = 11,716.13/x
  3. Step 3: Cross multiply
    19,680.05x = 27,144.96 × 11,716.13
  4. Step 4: Simplify right side
    19,680.05x = 318,033,744.48
  5. Step 5: Solve for x
    x = 318,033,744.48/19,680.05
  6. Step 6: Final answer
    x = 16,160.21

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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.