Home / 20,960.78-28,925.24-11,529.32

Finding the Fourth Proportional to 20,960.78, 28,925.24 and 11,529.32

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Solution

The fourth proportional to 20,960.78, 28,925.24 and 11,529.32 is: 15,910.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.78 : 28,925.24 = 11,529.32 : x
  2. Step 2: Convert to fraction form
    20,960.78/28,925.24 = 11,529.32/x
  3. Step 3: Cross multiply
    20,960.78x = 28,925.24 × 11,529.32
  4. Step 4: Simplify right side
    20,960.78x = 333,488,145.76
  5. Step 5: Solve for x
    x = 333,488,145.76/20,960.78
  6. Step 6: Final answer
    x = 15,910.11

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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.