Home / 11,821.90-16,314.34-6,516.58

Finding the Fourth Proportional to 11,821.90, 16,314.34 and 6,516.58

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Solution

The fourth proportional to 11,821.90, 16,314.34 and 6,516.58 is: 8,992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.90 : 16,314.34 = 6,516.58 : x
  2. Step 2: Convert to fraction form
    11,821.90/16,314.34 = 6,516.58/x
  3. Step 3: Cross multiply
    11,821.90x = 16,314.34 × 6,516.58
  4. Step 4: Simplify right side
    11,821.90x = 106,313,701.76
  5. Step 5: Solve for x
    x = 106,313,701.76/11,821.90
  6. Step 6: Final answer
    x = 8,992.95

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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.