Home / 20,155.55-27,814.12-11,203.43

Finding the Fourth Proportional to 20,155.55, 27,814.12 and 11,203.43

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Solution

The fourth proportional to 20,155.55, 27,814.12 and 11,203.43 is: 15,460.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.55 : 27,814.12 = 11,203.43 : x
  2. Step 2: Convert to fraction form
    20,155.55/27,814.12 = 11,203.43/x
  3. Step 3: Cross multiply
    20,155.55x = 27,814.12 × 11,203.43
  4. Step 4: Simplify right side
    20,155.55x = 311,613,379.35
  5. Step 5: Solve for x
    x = 311,613,379.35/20,155.55
  6. Step 6: Final answer
    x = 15,460.43

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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.