Home / 21,811.72-32,720.37-7,773.17

Finding the Fourth Proportional to 21,811.72, 32,720.37 and 7,773.17

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Solution

The fourth proportional to 21,811.72, 32,720.37 and 7,773.17 is: 11,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.72 : 32,720.37 = 7,773.17 : x
  2. Step 2: Convert to fraction form
    21,811.72/32,720.37 = 7,773.17/x
  3. Step 3: Cross multiply
    21,811.72x = 32,720.37 × 7,773.17
  4. Step 4: Simplify right side
    21,811.72x = 254,340,829.59
  5. Step 5: Solve for x
    x = 254,340,829.59/21,811.72
  6. Step 6: Final answer
    x = 11,660.74

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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.