Home / 20,960.75-28,925.25-11,529.32

Finding the Fourth Proportional to 20,960.75, 28,925.25 and 11,529.32

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Solution

The fourth proportional to 20,960.75, 28,925.25 and 11,529.32 is: 15,910.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.75 : 28,925.25 = 11,529.32 : x
  2. Step 2: Convert to fraction form
    20,960.75/28,925.25 = 11,529.32/x
  3. Step 3: Cross multiply
    20,960.75x = 28,925.25 × 11,529.32
  4. Step 4: Simplify right side
    20,960.75x = 333,488,318.70
  5. Step 5: Solve for x
    x = 333,488,318.70/20,960.75
  6. Step 6: Final answer
    x = 15,910.14

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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.