Home / 20,135.51-27,787.35-11,183.84

Finding the Fourth Proportional to 20,135.51, 27,787.35 and 11,183.84

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Solution

The fourth proportional to 20,135.51, 27,787.35 and 11,183.84 is: 15,433.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.51 : 27,787.35 = 11,183.84 : x
  2. Step 2: Convert to fraction form
    20,135.51/27,787.35 = 11,183.84/x
  3. Step 3: Cross multiply
    20,135.51x = 27,787.35 × 11,183.84
  4. Step 4: Simplify right side
    20,135.51x = 310,769,276.42
  5. Step 5: Solve for x
    x = 310,769,276.42/20,135.51
  6. Step 6: Final answer
    x = 15,433.89

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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.