Home / 20,930.41-28,884.02-12,314.37

Finding the Fourth Proportional to 20,930.41, 28,884.02 and 12,314.37

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Solution

The fourth proportional to 20,930.41, 28,884.02 and 12,314.37 is: 16,993.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.41 : 28,884.02 = 12,314.37 : x
  2. Step 2: Convert to fraction form
    20,930.41/28,884.02 = 12,314.37/x
  3. Step 3: Cross multiply
    20,930.41x = 28,884.02 × 12,314.37
  4. Step 4: Simplify right side
    20,930.41x = 355,688,447.80
  5. Step 5: Solve for x
    x = 355,688,447.80/20,930.41
  6. Step 6: Final answer
    x = 16,993.86

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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.