Home / 21,511.14-29,686.37-11,951.04

Finding the Fourth Proportional to 21,511.14, 29,686.37 and 11,951.04

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Solution

The fourth proportional to 21,511.14, 29,686.37 and 11,951.04 is: 16,492.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.14 : 29,686.37 = 11,951.04 : x
  2. Step 2: Convert to fraction form
    21,511.14/29,686.37 = 11,951.04/x
  3. Step 3: Cross multiply
    21,511.14x = 29,686.37 × 11,951.04
  4. Step 4: Simplify right side
    21,511.14x = 354,783,147.73
  5. Step 5: Solve for x
    x = 354,783,147.73/21,511.14
  6. Step 6: Final answer
    x = 16,492.99

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1.5x scale

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.