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Finding the Fourth Proportional to 19,288.05, 28,908.95 and 9,932.48

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Solution

The fourth proportional to 19,288.05, 28,908.95 and 9,932.48 is: 14,886.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,288.05 : 28,908.95 = 9,932.48 : x
  2. Step 2: Convert to fraction form
    19,288.05/28,908.95 = 9,932.48/x
  3. Step 3: Cross multiply
    19,288.05x = 28,908.95 × 9,932.48
  4. Step 4: Simplify right side
    19,288.05x = 287,137,567.70
  5. Step 5: Solve for x
    x = 287,137,567.70/19,288.05
  6. Step 6: Final answer
    x = 14,886.82

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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.