Home / 21,555.85-32,321.58-8,393.08

Finding the Fourth Proportional to 21,555.85, 32,321.58 and 8,393.08

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Solution

The fourth proportional to 21,555.85, 32,321.58 and 8,393.08 is: 12,584.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.85 : 32,321.58 = 8,393.08 : x
  2. Step 2: Convert to fraction form
    21,555.85/32,321.58 = 8,393.08/x
  3. Step 3: Cross multiply
    21,555.85x = 32,321.58 × 8,393.08
  4. Step 4: Simplify right side
    21,555.85x = 271,277,606.67
  5. Step 5: Solve for x
    x = 271,277,606.67/21,555.85
  6. Step 6: Final answer
    x = 12,584.87

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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.