Home / 20,673.06-28,530.94-12,177.86

Finding the Fourth Proportional to 20,673.06, 28,530.94 and 12,177.86

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Solution

The fourth proportional to 20,673.06, 28,530.94 and 12,177.86 is: 16,806.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.06 : 28,530.94 = 12,177.86 : x
  2. Step 2: Convert to fraction form
    20,673.06/28,530.94 = 12,177.86/x
  3. Step 3: Cross multiply
    20,673.06x = 28,530.94 × 12,177.86
  4. Step 4: Simplify right side
    20,673.06x = 347,445,619.89
  5. Step 5: Solve for x
    x = 347,445,619.89/20,673.06
  6. Step 6: Final answer
    x = 16,806.69

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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.