Home / 20,151.81-27,809.82-11,655.86

Finding the Fourth Proportional to 20,151.81, 27,809.82 and 11,655.86

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Solution

The fourth proportional to 20,151.81, 27,809.82 and 11,655.86 is: 16,085.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.81 : 27,809.82 = 11,655.86 : x
  2. Step 2: Convert to fraction form
    20,151.81/27,809.82 = 11,655.86/x
  3. Step 3: Cross multiply
    20,151.81x = 27,809.82 × 11,655.86
  4. Step 4: Simplify right side
    20,151.81x = 324,147,229.50
  5. Step 5: Solve for x
    x = 324,147,229.50/20,151.81
  6. Step 6: Final answer
    x = 16,085.27

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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.