Home / 20,137.47-27,789.14-11,184.75

Finding the Fourth Proportional to 20,137.47, 27,789.14 and 11,184.75

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Solution

The fourth proportional to 20,137.47, 27,789.14 and 11,184.75 is: 15,434.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.47 : 27,789.14 = 11,184.75 : x
  2. Step 2: Convert to fraction form
    20,137.47/27,789.14 = 11,184.75/x
  3. Step 3: Cross multiply
    20,137.47x = 27,789.14 × 11,184.75
  4. Step 4: Simplify right side
    20,137.47x = 310,814,527.69
  5. Step 5: Solve for x
    x = 310,814,527.69/20,137.47
  6. Step 6: Final answer
    x = 15,434.64

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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.