Home / 12,910.20-19,343.70-12,132.60

Finding the Fourth Proportional to 12,910.20, 19,343.70 and 12,132.60

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Solution

The fourth proportional to 12,910.20, 19,343.70 and 12,132.60 is: 18,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.20 : 19,343.70 = 12,132.60 : x
  2. Step 2: Convert to fraction form
    12,910.20/19,343.70 = 12,132.60/x
  3. Step 3: Cross multiply
    12,910.20x = 19,343.70 × 12,132.60
  4. Step 4: Simplify right side
    12,910.20x = 234,689,374.62
  5. Step 5: Solve for x
    x = 234,689,374.62/12,910.20
  6. Step 6: Final answer
    x = 18,178.60

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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.