Home / 15,511.94-21,406.17-8,797.61

Finding the Fourth Proportional to 15,511.94, 21,406.17 and 8,797.61

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Solution

The fourth proportional to 15,511.94, 21,406.17 and 8,797.61 is: 12,140.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.94 : 21,406.17 = 8,797.61 : x
  2. Step 2: Convert to fraction form
    15,511.94/21,406.17 = 8,797.61/x
  3. Step 3: Cross multiply
    15,511.94x = 21,406.17 × 8,797.61
  4. Step 4: Simplify right side
    15,511.94x = 188,323,221.76
  5. Step 5: Solve for x
    x = 188,323,221.76/15,511.94
  6. Step 6: Final answer
    x = 12,140.53

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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.