Home / 20,922.54-28,872.33-11,490.54

Finding the Fourth Proportional to 20,922.54, 28,872.33 and 11,490.54

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Solution

The fourth proportional to 20,922.54, 28,872.33 and 11,490.54 is: 15,856.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.54 : 28,872.33 = 11,490.54 : x
  2. Step 2: Convert to fraction form
    20,922.54/28,872.33 = 11,490.54/x
  3. Step 3: Cross multiply
    20,922.54x = 28,872.33 × 11,490.54
  4. Step 4: Simplify right side
    20,922.54x = 331,758,662.76
  5. Step 5: Solve for x
    x = 331,758,662.76/20,922.54
  6. Step 6: Final answer
    x = 15,856.52

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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.