Home / 20,669.85-28,524.48-11,238.39

Finding the Fourth Proportional to 20,669.85, 28,524.48 and 11,238.39

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Solution

The fourth proportional to 20,669.85, 28,524.48 and 11,238.39 is: 15,509.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.85 : 28,524.48 = 11,238.39 : x
  2. Step 2: Convert to fraction form
    20,669.85/28,524.48 = 11,238.39/x
  3. Step 3: Cross multiply
    20,669.85x = 28,524.48 × 11,238.39
  4. Step 4: Simplify right side
    20,669.85x = 320,569,230.79
  5. Step 5: Solve for x
    x = 320,569,230.79/20,669.85
  6. Step 6: Final answer
    x = 15,509.03

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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.