Home / 18,780.56-28,198.44-10,476.80

Finding the Fourth Proportional to 18,780.56, 28,198.44 and 10,476.80

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Solution

The fourth proportional to 18,780.56, 28,198.44 and 10,476.80 is: 15,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.56 : 28,198.44 = 10,476.80 : x
  2. Step 2: Convert to fraction form
    18,780.56/28,198.44 = 10,476.80/x
  3. Step 3: Cross multiply
    18,780.56x = 28,198.44 × 10,476.80
  4. Step 4: Simplify right side
    18,780.56x = 295,429,416.19
  5. Step 5: Solve for x
    x = 295,429,416.19/18,780.56
  6. Step 6: Final answer
    x = 15,730.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.