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Finding the Fourth Proportional to 19,135.68, 28,696.88 and 7,286.59

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Solution

The fourth proportional to 19,135.68, 28,696.88 and 7,286.59 is: 10,927.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,135.68 : 28,696.88 = 7,286.59 : x
  2. Step 2: Convert to fraction form
    19,135.68/28,696.88 = 7,286.59/x
  3. Step 3: Cross multiply
    19,135.68x = 28,696.88 × 7,286.59
  4. Step 4: Simplify right side
    19,135.68x = 209,102,452.93
  5. Step 5: Solve for x
    x = 209,102,452.93/19,135.68
  6. Step 6: Final answer
    x = 10,927.36

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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.