Home / 18,780.56-25,917.54-10,821.44

Finding the Fourth Proportional to 18,780.56, 25,917.54 and 10,821.44

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Solution

The fourth proportional to 18,780.56, 25,917.54 and 10,821.44 is: 14,933.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.56 : 25,917.54 = 10,821.44 : x
  2. Step 2: Convert to fraction form
    18,780.56/25,917.54 = 10,821.44/x
  3. Step 3: Cross multiply
    18,780.56x = 25,917.54 × 10,821.44
  4. Step 4: Simplify right side
    18,780.56x = 280,465,104.06
  5. Step 5: Solve for x
    x = 280,465,104.06/18,780.56
  6. Step 6: Final answer
    x = 14,933.80

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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.