Home / 20,743.61-28,629.38-12,246.64

Finding the Fourth Proportional to 20,743.61, 28,629.38 and 12,246.64

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Solution

The fourth proportional to 20,743.61, 28,629.38 and 12,246.64 is: 16,902.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.61 : 28,629.38 = 12,246.64 : x
  2. Step 2: Convert to fraction form
    20,743.61/28,629.38 = 12,246.64/x
  3. Step 3: Cross multiply
    20,743.61x = 28,629.38 × 12,246.64
  4. Step 4: Simplify right side
    20,743.61x = 350,613,669.33
  5. Step 5: Solve for x
    x = 350,613,669.33/20,743.61
  6. Step 6: Final answer
    x = 16,902.25

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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.