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Finding the Fourth Proportional to 21,555.27, 32,337.77 and 6,764.13

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Solution

The fourth proportional to 21,555.27, 32,337.77 and 6,764.13 is: 10,147.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.27 : 32,337.77 = 6,764.13 : x
  2. Step 2: Convert to fraction form
    21,555.27/32,337.77 = 6,764.13/x
  3. Step 3: Cross multiply
    21,555.27x = 32,337.77 × 6,764.13
  4. Step 4: Simplify right side
    21,555.27x = 218,736,846.37
  5. Step 5: Solve for x
    x = 218,736,846.37/21,555.27
  6. Step 6: Final answer
    x = 10,147.72

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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.