Home / 20,960.12-28,927.09-12,008.81

Finding the Fourth Proportional to 20,960.12, 28,927.09 and 12,008.81

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Solution

The fourth proportional to 20,960.12, 28,927.09 and 12,008.81 is: 16,573.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.12 : 28,927.09 = 12,008.81 : x
  2. Step 2: Convert to fraction form
    20,960.12/28,927.09 = 12,008.81/x
  3. Step 3: Cross multiply
    20,960.12x = 28,927.09 × 12,008.81
  4. Step 4: Simplify right side
    20,960.12x = 347,380,014.99
  5. Step 5: Solve for x
    x = 347,380,014.99/20,960.12
  6. Step 6: Final answer
    x = 16,573.38

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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.