Home / 13,180.68-18,189.66-8,148.36

Finding the Fourth Proportional to 13,180.68, 18,189.66 and 8,148.36

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Solution

The fourth proportional to 13,180.68, 18,189.66 and 8,148.36 is: 11,244.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.68 : 18,189.66 = 8,148.36 : x
  2. Step 2: Convert to fraction form
    13,180.68/18,189.66 = 8,148.36/x
  3. Step 3: Cross multiply
    13,180.68x = 18,189.66 × 8,148.36
  4. Step 4: Simplify right side
    13,180.68x = 148,215,897.96
  5. Step 5: Solve for x
    x = 148,215,897.96/13,180.68
  6. Step 6: Final answer
    x = 11,244.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.