Home / 20,812.82-31,224.29-11,448.41

Finding the Fourth Proportional to 20,812.82, 31,224.29 and 11,448.41

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Solution

The fourth proportional to 20,812.82, 31,224.29 and 11,448.41 is: 17,175.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812.82 : 31,224.29 = 11,448.41 : x
  2. Step 2: Convert to fraction form
    20,812.82/31,224.29 = 11,448.41/x
  3. Step 3: Cross multiply
    20,812.82x = 31,224.29 × 11,448.41
  4. Step 4: Simplify right side
    20,812.82x = 357,468,260.52
  5. Step 5: Solve for x
    x = 357,468,260.52/20,812.82
  6. Step 6: Final answer
    x = 17,175.39

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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.