Home / 18,613.40-27,921.45-11,201.90

Finding the Fourth Proportional to 18,613.40, 27,921.45 and 11,201.90

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Solution

The fourth proportional to 18,613.40, 27,921.45 and 11,201.90 is: 16,803.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.40 : 27,921.45 = 11,201.90 : x
  2. Step 2: Convert to fraction form
    18,613.40/27,921.45 = 11,201.90/x
  3. Step 3: Cross multiply
    18,613.40x = 27,921.45 × 11,201.90
  4. Step 4: Simplify right side
    18,613.40x = 312,773,290.76
  5. Step 5: Solve for x
    x = 312,773,290.76/18,613.40
  6. Step 6: Final answer
    x = 16,803.66

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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.