Home / 20,127.72-27,775.86-11,634.60

Finding the Fourth Proportional to 20,127.72, 27,775.86 and 11,634.60

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Solution

The fourth proportional to 20,127.72, 27,775.86 and 11,634.60 is: 16,055.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.72 : 27,775.86 = 11,634.60 : x
  2. Step 2: Convert to fraction form
    20,127.72/27,775.86 = 11,634.60/x
  3. Step 3: Cross multiply
    20,127.72x = 27,775.86 × 11,634.60
  4. Step 4: Simplify right side
    20,127.72x = 323,161,020.76
  5. Step 5: Solve for x
    x = 323,161,020.76/20,127.72
  6. Step 6: Final answer
    x = 16,055.52

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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.