Home / 20,064.20-27,689.61-11,112.68

Finding the Fourth Proportional to 20,064.20, 27,689.61 and 11,112.68

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Solution

The fourth proportional to 20,064.20, 27,689.61 and 11,112.68 is: 15,336.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,064.20 : 27,689.61 = 11,112.68 : x
  2. Step 2: Convert to fraction form
    20,064.20/27,689.61 = 11,112.68/x
  3. Step 3: Cross multiply
    20,064.20x = 27,689.61 × 11,112.68
  4. Step 4: Simplify right side
    20,064.20x = 307,705,775.25
  5. Step 5: Solve for x
    x = 307,705,775.25/20,064.20
  6. Step 6: Final answer
    x = 15,336.06

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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.