Home / 20,124.84-27,772.99-11,172.48

Finding the Fourth Proportional to 20,124.84, 27,772.99 and 11,172.48

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Solution

The fourth proportional to 20,124.84, 27,772.99 and 11,172.48 is: 15,418.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.84 : 27,772.99 = 11,172.48 : x
  2. Step 2: Convert to fraction form
    20,124.84/27,772.99 = 11,172.48/x
  3. Step 3: Cross multiply
    20,124.84x = 27,772.99 × 11,172.48
  4. Step 4: Simplify right side
    20,124.84x = 310,293,175.32
  5. Step 5: Solve for x
    x = 310,293,175.32/20,124.84
  6. Step 6: Final answer
    x = 15,418.42

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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.