Home / 20,965.83-28,932.96-12,013.71

Finding the Fourth Proportional to 20,965.83, 28,932.96 and 12,013.71

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Solution

The fourth proportional to 20,965.83, 28,932.96 and 12,013.71 is: 16,578.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.83 : 28,932.96 = 12,013.71 : x
  2. Step 2: Convert to fraction form
    20,965.83/28,932.96 = 12,013.71/x
  3. Step 3: Cross multiply
    20,965.83x = 28,932.96 × 12,013.71
  4. Step 4: Simplify right side
    20,965.83x = 347,592,190.88
  5. Step 5: Solve for x
    x = 347,592,190.88/20,965.83
  6. Step 6: Final answer
    x = 16,578.99

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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.