Home / 20,961.06-28,926.24-12,008.60

Finding the Fourth Proportional to 20,961.06, 28,926.24 and 12,008.60

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Solution

The fourth proportional to 20,961.06, 28,926.24 and 12,008.60 is: 16,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.06 : 28,926.24 = 12,008.60 : x
  2. Step 2: Convert to fraction form
    20,961.06/28,926.24 = 12,008.60/x
  3. Step 3: Cross multiply
    20,961.06x = 28,926.24 × 12,008.60
  4. Step 4: Simplify right side
    20,961.06x = 347,363,507.17
  5. Step 5: Solve for x
    x = 347,363,507.17/20,961.06
  6. Step 6: Final answer
    x = 16,571.85

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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.