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Finding the Fourth Proportional to 14,279.65, 19,705.92 and 7,992.03

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Solution

The fourth proportional to 14,279.65, 19,705.92 and 7,992.03 is: 11,028.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.65 : 19,705.92 = 7,992.03 : x
  2. Step 2: Convert to fraction form
    14,279.65/19,705.92 = 7,992.03/x
  3. Step 3: Cross multiply
    14,279.65x = 19,705.92 × 7,992.03
  4. Step 4: Simplify right side
    14,279.65x = 157,490,199.95
  5. Step 5: Solve for x
    x = 157,490,199.95/14,279.65
  6. Step 6: Final answer
    x = 11,028.99

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Why These Related Problems?

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