Home / 21,511.46-29,685-11,951.84

Finding the Fourth Proportional to 21,511.46, 29,685 and 11,951.84

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Solution

The fourth proportional to 21,511.46, 29,685 and 11,951.84 is: 16,493.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.46 : 29,685 = 11,951.84 : x
  2. Step 2: Convert to fraction form
    21,511.46/29,685 = 11,951.84/x
  3. Step 3: Cross multiply
    21,511.46x = 29,685 × 11,951.84
  4. Step 4: Simplify right side
    21,511.46x = 354,790,370.40
  5. Step 5: Solve for x
    x = 354,790,370.40/21,511.46
  6. Step 6: Final answer
    x = 16,493.09

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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.