Home / 20,961.28-28,925.93-11,529.82

Finding the Fourth Proportional to 20,961.28, 28,925.93 and 11,529.82

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Solution

The fourth proportional to 20,961.28, 28,925.93 and 11,529.82 is: 15,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.28 : 28,925.93 = 11,529.82 : x
  2. Step 2: Convert to fraction form
    20,961.28/28,925.93 = 11,529.82/x
  3. Step 3: Cross multiply
    20,961.28x = 28,925.93 × 11,529.82
  4. Step 4: Simplify right side
    20,961.28x = 333,510,563.95
  5. Step 5: Solve for x
    x = 333,510,563.95/20,961.28
  6. Step 6: Final answer
    x = 15,910.80

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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.