Home / 21,610.94-29,822.68-12,179.50

Finding the Fourth Proportional to 21,610.94, 29,822.68 and 12,179.50

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Solution

The fourth proportional to 21,610.94, 29,822.68 and 12,179.50 is: 16,807.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,610.94 : 29,822.68 = 12,179.50 : x
  2. Step 2: Convert to fraction form
    21,610.94/29,822.68 = 12,179.50/x
  3. Step 3: Cross multiply
    21,610.94x = 29,822.68 × 12,179.50
  4. Step 4: Simplify right side
    21,610.94x = 363,225,271.73
  5. Step 5: Solve for x
    x = 363,225,271.73/21,610.94
  6. Step 6: Final answer
    x = 16,807.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.