Home / 11,996.91-18,001.44-5,421.63

Finding the Fourth Proportional to 11,996.91, 18,001.44 and 5,421.63

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Solution

The fourth proportional to 11,996.91, 18,001.44 and 5,421.63 is: 8,135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,996.91 : 18,001.44 = 5,421.63 : x
  2. Step 2: Convert to fraction form
    11,996.91/18,001.44 = 5,421.63/x
  3. Step 3: Cross multiply
    11,996.91x = 18,001.44 × 5,421.63
  4. Step 4: Simplify right side
    11,996.91x = 97,597,214.65
  5. Step 5: Solve for x
    x = 97,597,214.65/11,996.91
  6. Step 6: Final answer
    x = 8,135.20

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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.