Home / 20,137.56-27,789.48-11,184.72

Finding the Fourth Proportional to 20,137.56, 27,789.48 and 11,184.72

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Solution

The fourth proportional to 20,137.56, 27,789.48 and 11,184.72 is: 15,434.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.56 : 27,789.48 = 11,184.72 : x
  2. Step 2: Convert to fraction form
    20,137.56/27,789.48 = 11,184.72/x
  3. Step 3: Cross multiply
    20,137.56x = 27,789.48 × 11,184.72
  4. Step 4: Simplify right side
    20,137.56x = 310,817,552.75
  5. Step 5: Solve for x
    x = 310,817,552.75/20,137.56
  6. Step 6: Final answer
    x = 15,434.72

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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.