Home / 20,561.22-28,374.57-12,177.18

Finding the Fourth Proportional to 20,561.22, 28,374.57 and 12,177.18

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Solution

The fourth proportional to 20,561.22, 28,374.57 and 12,177.18 is: 16,804.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.22 : 28,374.57 = 12,177.18 : x
  2. Step 2: Convert to fraction form
    20,561.22/28,374.57 = 12,177.18/x
  3. Step 3: Cross multiply
    20,561.22x = 28,374.57 × 12,177.18
  4. Step 4: Simplify right side
    20,561.22x = 345,522,246.31
  5. Step 5: Solve for x
    x = 345,522,246.31/20,561.22
  6. Step 6: Final answer
    x = 16,804.56

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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.