Home / 20,112.96-27,760.32-11,730.72

Finding the Fourth Proportional to 20,112.96, 27,760.32 and 11,730.72

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Solution

The fourth proportional to 20,112.96, 27,760.32 and 11,730.72 is: 16,190.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.96 : 27,760.32 = 11,730.72 : x
  2. Step 2: Convert to fraction form
    20,112.96/27,760.32 = 11,730.72/x
  3. Step 3: Cross multiply
    20,112.96x = 27,760.32 × 11,730.72
  4. Step 4: Simplify right side
    20,112.96x = 325,648,541.03
  5. Step 5: Solve for x
    x = 325,648,541.03/20,112.96
  6. Step 6: Final answer
    x = 16,190.98

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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.