Home / 20,670.33-28,524.92-11,238.90

Finding the Fourth Proportional to 20,670.33, 28,524.92 and 11,238.90

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Solution

The fourth proportional to 20,670.33, 28,524.92 and 11,238.90 is: 15,509.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.33 : 28,524.92 = 11,238.90 : x
  2. Step 2: Convert to fraction form
    20,670.33/28,524.92 = 11,238.90/x
  3. Step 3: Cross multiply
    20,670.33x = 28,524.92 × 11,238.90
  4. Step 4: Simplify right side
    20,670.33x = 320,588,667.19
  5. Step 5: Solve for x
    x = 320,588,667.19/20,670.33
  6. Step 6: Final answer
    x = 15,509.61

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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.