Home / 20,701.11-28,571.27-12,202.74

Finding the Fourth Proportional to 20,701.11, 28,571.27 and 12,202.74

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Solution

The fourth proportional to 20,701.11, 28,571.27 and 12,202.74 is: 16,841.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.11 : 28,571.27 = 12,202.74 : x
  2. Step 2: Convert to fraction form
    20,701.11/28,571.27 = 12,202.74/x
  3. Step 3: Cross multiply
    20,701.11x = 28,571.27 × 12,202.74
  4. Step 4: Simplify right side
    20,701.11x = 348,647,718.27
  5. Step 5: Solve for x
    x = 348,647,718.27/20,701.11
  6. Step 6: Final answer
    x = 16,841.98

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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.