Home / 20,124.54-27,771.96-11,172.18

Finding the Fourth Proportional to 20,124.54, 27,771.96 and 11,172.18

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Solution

The fourth proportional to 20,124.54, 27,771.96 and 11,172.18 is: 15,417.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.54 : 27,771.96 = 11,172.18 : x
  2. Step 2: Convert to fraction form
    20,124.54/27,771.96 = 11,172.18/x
  3. Step 3: Cross multiply
    20,124.54x = 27,771.96 × 11,172.18
  4. Step 4: Simplify right side
    20,124.54x = 310,273,336.07
  5. Step 5: Solve for x
    x = 310,273,336.07/20,124.54
  6. Step 6: Final answer
    x = 15,417.66

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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.