Home / 20,930.94-28,883.66-11,499.84

Finding the Fourth Proportional to 20,930.94, 28,883.66 and 11,499.84

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Solution

The fourth proportional to 20,930.94, 28,883.66 and 11,499.84 is: 15,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.94 : 28,883.66 = 11,499.84 : x
  2. Step 2: Convert to fraction form
    20,930.94/28,883.66 = 11,499.84/x
  3. Step 3: Cross multiply
    20,930.94x = 28,883.66 × 11,499.84
  4. Step 4: Simplify right side
    20,930.94x = 332,157,411.12
  5. Step 5: Solve for x
    x = 332,157,411.12/20,930.94
  6. Step 6: Final answer
    x = 15,869.21

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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.