Home / 12,209.92-16,846.86-8,436.40

Finding the Fourth Proportional to 12,209.92, 16,846.86 and 8,436.40

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Solution

The fourth proportional to 12,209.92, 16,846.86 and 8,436.40 is: 11,640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.92 : 16,846.86 = 8,436.40 : x
  2. Step 2: Convert to fraction form
    12,209.92/16,846.86 = 8,436.40/x
  3. Step 3: Cross multiply
    12,209.92x = 16,846.86 × 8,436.40
  4. Step 4: Simplify right side
    12,209.92x = 142,126,849.70
  5. Step 5: Solve for x
    x = 142,126,849.70/12,209.92
  6. Step 6: Final answer
    x = 11,640.28

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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.