Home / 20,416.25-28,174.20-11,463.54

Finding the Fourth Proportional to 20,416.25, 28,174.20 and 11,463.54

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Solution

The fourth proportional to 20,416.25, 28,174.20 and 11,463.54 is: 15,819.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.25 : 28,174.20 = 11,463.54 : x
  2. Step 2: Convert to fraction form
    20,416.25/28,174.20 = 11,463.54/x
  3. Step 3: Cross multiply
    20,416.25x = 28,174.20 × 11,463.54
  4. Step 4: Simplify right side
    20,416.25x = 322,976,068.67
  5. Step 5: Solve for x
    x = 322,976,068.67/20,416.25
  6. Step 6: Final answer
    x = 15,819.56

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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.