Home / 20,655.82-28,505.01-11,224.36

Finding the Fourth Proportional to 20,655.82, 28,505.01 and 11,224.36

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Solution

The fourth proportional to 20,655.82, 28,505.01 and 11,224.36 is: 15,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.82 : 28,505.01 = 11,224.36 : x
  2. Step 2: Convert to fraction form
    20,655.82/28,505.01 = 11,224.36/x
  3. Step 3: Cross multiply
    20,655.82x = 28,505.01 × 11,224.36
  4. Step 4: Simplify right side
    20,655.82x = 319,950,494.04
  5. Step 5: Solve for x
    x = 319,950,494.04/20,655.82
  6. Step 6: Final answer
    x = 15,489.61

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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.