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Finding the Fourth Proportional to 10,654.32, 15,990.04 and 4,811.44

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Solution

The fourth proportional to 10,654.32, 15,990.04 and 4,811.44 is: 7,221.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,654.32 : 15,990.04 = 4,811.44 : x
  2. Step 2: Convert to fraction form
    10,654.32/15,990.04 = 4,811.44/x
  3. Step 3: Cross multiply
    10,654.32x = 15,990.04 × 4,811.44
  4. Step 4: Simplify right side
    10,654.32x = 76,935,118.06
  5. Step 5: Solve for x
    x = 76,935,118.06/10,654.32
  6. Step 6: Final answer
    x = 7,221.03

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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.