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Finding the Fourth Proportional to 11,206.60, 16,809.90 and 7,750.60

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Solution

The fourth proportional to 11,206.60, 16,809.90 and 7,750.60 is: 11,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,206.60 : 16,809.90 = 7,750.60 : x
  2. Step 2: Convert to fraction form
    11,206.60/16,809.90 = 7,750.60/x
  3. Step 3: Cross multiply
    11,206.60x = 16,809.90 × 7,750.60
  4. Step 4: Simplify right side
    11,206.60x = 130,286,810.94
  5. Step 5: Solve for x
    x = 130,286,810.94/11,206.60
  6. Step 6: Final answer
    x = 11,625.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.