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Finding the Fourth Proportional to 19,177.88, 28,768.38 and 5,326.88

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Solution

The fourth proportional to 19,177.88, 28,768.38 and 5,326.88 is: 7,990.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,177.88 : 28,768.38 = 5,326.88 : x
  2. Step 2: Convert to fraction form
    19,177.88/28,768.38 = 5,326.88/x
  3. Step 3: Cross multiply
    19,177.88x = 28,768.38 × 5,326.88
  4. Step 4: Simplify right side
    19,177.88x = 153,245,708.05
  5. Step 5: Solve for x
    x = 153,245,708.05/19,177.88
  6. Step 6: Final answer
    x = 7,990.75

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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.