Home / 21,660.48-32,511.12-11,137.88

Finding the Fourth Proportional to 21,660.48, 32,511.12 and 11,137.88

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Solution

The fourth proportional to 21,660.48, 32,511.12 and 11,137.88 is: 16,717.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.48 : 32,511.12 = 11,137.88 : x
  2. Step 2: Convert to fraction form
    21,660.48/32,511.12 = 11,137.88/x
  3. Step 3: Cross multiply
    21,660.48x = 32,511.12 × 11,137.88
  4. Step 4: Simplify right side
    21,660.48x = 362,104,790.67
  5. Step 5: Solve for x
    x = 362,104,790.67/21,660.48
  6. Step 6: Final answer
    x = 16,717.30

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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.