Home / 18,780.12-25,917.81-10,822.86

Finding the Fourth Proportional to 18,780.12, 25,917.81 and 10,822.86

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Solution

The fourth proportional to 18,780.12, 25,917.81 and 10,822.86 is: 14,936.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.12 : 25,917.81 = 10,822.86 : x
  2. Step 2: Convert to fraction form
    18,780.12/25,917.81 = 10,822.86/x
  3. Step 3: Cross multiply
    18,780.12x = 25,917.81 × 10,822.86
  4. Step 4: Simplify right side
    18,780.12x = 280,504,806.97
  5. Step 5: Solve for x
    x = 280,504,806.97/18,780.12
  6. Step 6: Final answer
    x = 14,936.26

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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.