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Finding the Fourth Proportional to 14,280.28, 19,706.78 and 7,992.65

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Solution

The fourth proportional to 14,280.28, 19,706.78 and 7,992.65 is: 11,029.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.28 : 19,706.78 = 7,992.65 : x
  2. Step 2: Convert to fraction form
    14,280.28/19,706.78 = 7,992.65/x
  3. Step 3: Cross multiply
    14,280.28x = 19,706.78 × 7,992.65
  4. Step 4: Simplify right side
    14,280.28x = 157,509,395.17
  5. Step 5: Solve for x
    x = 157,509,395.17/14,280.28
  6. Step 6: Final answer
    x = 11,029.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.