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Finding the Fourth Proportional to 19,326.76, 28,983.29 and 9,193.94

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Solution

The fourth proportional to 19,326.76, 28,983.29 and 9,193.94 is: 13,787.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,326.76 : 28,983.29 = 9,193.94 : x
  2. Step 2: Convert to fraction form
    19,326.76/28,983.29 = 9,193.94/x
  3. Step 3: Cross multiply
    19,326.76x = 28,983.29 × 9,193.94
  4. Step 4: Simplify right side
    19,326.76x = 266,470,583.29
  5. Step 5: Solve for x
    x = 266,470,583.29/19,326.76
  6. Step 6: Final answer
    x = 13,787.65

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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.