Home / 20,469.96-28,235.79-14,085.54

Finding the Fourth Proportional to 20,469.96, 28,235.79 and 14,085.54

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Solution

The fourth proportional to 20,469.96, 28,235.79 and 14,085.54 is: 19,429.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.96 : 28,235.79 = 14,085.54 : x
  2. Step 2: Convert to fraction form
    20,469.96/28,235.79 = 14,085.54/x
  3. Step 3: Cross multiply
    20,469.96x = 28,235.79 × 14,085.54
  4. Step 4: Simplify right side
    20,469.96x = 397,716,349.48
  5. Step 5: Solve for x
    x = 397,716,349.48/20,469.96
  6. Step 6: Final answer
    x = 19,429.27

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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.