Home / 12,104.20-18,156.30-7,708.60

Finding the Fourth Proportional to 12,104.20, 18,156.30 and 7,708.60

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Solution

The fourth proportional to 12,104.20, 18,156.30 and 7,708.60 is: 11,562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,104.20 : 18,156.30 = 7,708.60 : x
  2. Step 2: Convert to fraction form
    12,104.20/18,156.30 = 7,708.60/x
  3. Step 3: Cross multiply
    12,104.20x = 18,156.30 × 7,708.60
  4. Step 4: Simplify right side
    12,104.20x = 139,959,654.18
  5. Step 5: Solve for x
    x = 139,959,654.18/12,104.20
  6. Step 6: Final answer
    x = 11,562.90

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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.