Home / 12,110.60-18,171.54-7,189.92

Finding the Fourth Proportional to 12,110.60, 18,171.54 and 7,189.92

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Solution

The fourth proportional to 12,110.60, 18,171.54 and 7,189.92 is: 10,788.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.60 : 18,171.54 = 7,189.92 : x
  2. Step 2: Convert to fraction form
    12,110.60/18,171.54 = 7,189.92/x
  3. Step 3: Cross multiply
    12,110.60x = 18,171.54 × 7,189.92
  4. Step 4: Simplify right side
    12,110.60x = 130,651,918.88
  5. Step 5: Solve for x
    x = 130,651,918.88/12,110.60
  6. Step 6: Final answer
    x = 10,788.23

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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.