Home / 19,812.82-27,337.22-13,440.28

Finding the Fourth Proportional to 19,812.82, 27,337.22 and 13,440.28

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Solution

The fourth proportional to 19,812.82, 27,337.22 and 13,440.28 is: 18,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.82 : 27,337.22 = 13,440.28 : x
  2. Step 2: Convert to fraction form
    19,812.82/27,337.22 = 13,440.28/x
  3. Step 3: Cross multiply
    19,812.82x = 27,337.22 × 13,440.28
  4. Step 4: Simplify right side
    19,812.82x = 367,419,891.22
  5. Step 5: Solve for x
    x = 367,419,891.22/19,812.82
  6. Step 6: Final answer
    x = 18,544.55

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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.