Home / 20,087.25-27,719.64-11,134.92

Finding the Fourth Proportional to 20,087.25, 27,719.64 and 11,134.92

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Solution

The fourth proportional to 20,087.25, 27,719.64 and 11,134.92 is: 15,365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.25 : 27,719.64 = 11,134.92 : x
  2. Step 2: Convert to fraction form
    20,087.25/27,719.64 = 11,134.92/x
  3. Step 3: Cross multiply
    20,087.25x = 27,719.64 × 11,134.92
  4. Step 4: Simplify right side
    20,087.25x = 308,655,973.83
  5. Step 5: Solve for x
    x = 308,655,973.83/20,087.25
  6. Step 6: Final answer
    x = 15,365.77

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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.