Home / 21,511.13-32,261.83-8,179.37

Finding the Fourth Proportional to 21,511.13, 32,261.83 and 8,179.37

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Solution

The fourth proportional to 21,511.13, 32,261.83 and 8,179.37 is: 12,267.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.13 : 32,261.83 = 8,179.37 : x
  2. Step 2: Convert to fraction form
    21,511.13/32,261.83 = 8,179.37/x
  3. Step 3: Cross multiply
    21,511.13x = 32,261.83 × 8,179.37
  4. Step 4: Simplify right side
    21,511.13x = 263,881,444.45
  5. Step 5: Solve for x
    x = 263,881,444.45/21,511.13
  6. Step 6: Final answer
    x = 12,267.21

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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.