Home / 20,137.52-27,789.64-11,184.72

Finding the Fourth Proportional to 20,137.52, 27,789.64 and 11,184.72

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Solution

The fourth proportional to 20,137.52, 27,789.64 and 11,184.72 is: 15,434.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.52 : 27,789.64 = 11,184.72 : x
  2. Step 2: Convert to fraction form
    20,137.52/27,789.64 = 11,184.72/x
  3. Step 3: Cross multiply
    20,137.52x = 27,789.64 × 11,184.72
  4. Step 4: Simplify right side
    20,137.52x = 310,819,342.30
  5. Step 5: Solve for x
    x = 310,819,342.30/20,137.52
  6. Step 6: Final answer
    x = 15,434.84

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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.