Home / 20,124.77-27,771.66-11,171.97

Finding the Fourth Proportional to 20,124.77, 27,771.66 and 11,171.97

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Solution

The fourth proportional to 20,124.77, 27,771.66 and 11,171.97 is: 15,417.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.77 : 27,771.66 = 11,171.97 : x
  2. Step 2: Convert to fraction form
    20,124.77/27,771.66 = 11,171.97/x
  3. Step 3: Cross multiply
    20,124.77x = 27,771.66 × 11,171.97
  4. Step 4: Simplify right side
    20,124.77x = 310,264,152.37
  5. Step 5: Solve for x
    x = 310,264,152.37/20,124.77
  6. Step 6: Final answer
    x = 15,417.03

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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.