Home / 12,942.60-19,433.70-7,110.60

Finding the Fourth Proportional to 12,942.60, 19,433.70 and 7,110.60

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Solution

The fourth proportional to 12,942.60, 19,433.70 and 7,110.60 is: 10,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.60 : 19,433.70 = 7,110.60 : x
  2. Step 2: Convert to fraction form
    12,942.60/19,433.70 = 7,110.60/x
  3. Step 3: Cross multiply
    12,942.60x = 19,433.70 × 7,110.60
  4. Step 4: Simplify right side
    12,942.60x = 138,185,267.22
  5. Step 5: Solve for x
    x = 138,185,267.22/12,942.60
  6. Step 6: Final answer
    x = 10,676.78

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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.