Home / 12,195.45-16,826.70-6,890.15

Finding the Fourth Proportional to 12,195.45, 16,826.70 and 6,890.15

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Solution

The fourth proportional to 12,195.45, 16,826.70 and 6,890.15 is: 9,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.45 : 16,826.70 = 6,890.15 : x
  2. Step 2: Convert to fraction form
    12,195.45/16,826.70 = 6,890.15/x
  3. Step 3: Cross multiply
    12,195.45x = 16,826.70 × 6,890.15
  4. Step 4: Simplify right side
    12,195.45x = 115,938,487.01
  5. Step 5: Solve for x
    x = 115,938,487.01/12,195.45
  6. Step 6: Final answer
    x = 9,506.70

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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.