Home / 12,007.40-17,998.65-4,991.22

Finding the Fourth Proportional to 12,007.40, 17,998.65 and 4,991.22

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Solution

The fourth proportional to 12,007.40, 17,998.65 and 4,991.22 is: 7,481.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.40 : 17,998.65 = 4,991.22 : x
  2. Step 2: Convert to fraction form
    12,007.40/17,998.65 = 4,991.22/x
  3. Step 3: Cross multiply
    12,007.40x = 17,998.65 × 4,991.22
  4. Step 4: Simplify right side
    12,007.40x = 89,835,221.85
  5. Step 5: Solve for x
    x = 89,835,221.85/12,007.40
  6. Step 6: Final answer
    x = 7,481.66

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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.