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Finding the Fourth Proportional to 14,670.39, 20,245.02 and 7,956

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Solution

The fourth proportional to 14,670.39, 20,245.02 and 7,956 is: 10,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,670.39 : 20,245.02 = 7,956 : x
  2. Step 2: Convert to fraction form
    14,670.39/20,245.02 = 7,956/x
  3. Step 3: Cross multiply
    14,670.39x = 20,245.02 × 7,956
  4. Step 4: Simplify right side
    14,670.39x = 161,069,379.12
  5. Step 5: Solve for x
    x = 161,069,379.12/14,670.39
  6. Step 6: Final answer
    x = 10,979.22

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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.