Home / 20,960.61-28,917.43-12,003.36

Finding the Fourth Proportional to 20,960.61, 28,917.43 and 12,003.36

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Solution

The fourth proportional to 20,960.61, 28,917.43 and 12,003.36 is: 16,559.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.61 : 28,917.43 = 12,003.36 : x
  2. Step 2: Convert to fraction form
    20,960.61/28,917.43 = 12,003.36/x
  3. Step 3: Cross multiply
    20,960.61x = 28,917.43 × 12,003.36
  4. Step 4: Simplify right side
    20,960.61x = 347,106,322.56
  5. Step 5: Solve for x
    x = 347,106,322.56/20,960.61
  6. Step 6: Final answer
    x = 16,559.93

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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.