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Finding the Fourth Proportional to 19,034.28, 28,546.80 and 7,934.94

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Solution

The fourth proportional to 19,034.28, 28,546.80 and 7,934.94 is: 11,900.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,034.28 : 28,546.80 = 7,934.94 : x
  2. Step 2: Convert to fraction form
    19,034.28/28,546.80 = 7,934.94/x
  3. Step 3: Cross multiply
    19,034.28x = 28,546.80 × 7,934.94
  4. Step 4: Simplify right side
    19,034.28x = 226,517,145.19
  5. Step 5: Solve for x
    x = 226,517,145.19/19,034.28
  6. Step 6: Final answer
    x = 11,900.48

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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.