Home / 20,794.47-28,676.54-13,613.67

Finding the Fourth Proportional to 20,794.47, 28,676.54 and 13,613.67

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Solution

The fourth proportional to 20,794.47, 28,676.54 and 13,613.67 is: 18,773.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.47 : 28,676.54 = 13,613.67 : x
  2. Step 2: Convert to fraction form
    20,794.47/28,676.54 = 13,613.67/x
  3. Step 3: Cross multiply
    20,794.47x = 28,676.54 × 13,613.67
  4. Step 4: Simplify right side
    20,794.47x = 390,392,884.23
  5. Step 5: Solve for x
    x = 390,392,884.23/20,794.47
  6. Step 6: Final answer
    x = 18,773.88

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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.