Home / 19,177.80-28,756.94-8,780.64

Finding the Fourth Proportional to 19,177.80, 28,756.94 and 8,780.64

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Solution

The fourth proportional to 19,177.80, 28,756.94 and 8,780.64 is: 13,166.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,177.80 : 28,756.94 = 8,780.64 : x
  2. Step 2: Convert to fraction form
    19,177.80/28,756.94 = 8,780.64/x
  3. Step 3: Cross multiply
    19,177.80x = 28,756.94 × 8,780.64
  4. Step 4: Simplify right side
    19,177.80x = 252,504,337.64
  5. Step 5: Solve for x
    x = 252,504,337.64/19,177.80
  6. Step 6: Final answer
    x = 13,166.49

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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.