Home / 20,794.13-28,699.14-13,243.72

Finding the Fourth Proportional to 20,794.13, 28,699.14 and 13,243.72

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Solution

The fourth proportional to 20,794.13, 28,699.14 and 13,243.72 is: 18,278.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.13 : 28,699.14 = 13,243.72 : x
  2. Step 2: Convert to fraction form
    20,794.13/28,699.14 = 13,243.72/x
  3. Step 3: Cross multiply
    20,794.13x = 28,699.14 × 13,243.72
  4. Step 4: Simplify right side
    20,794.13x = 380,083,230.91
  5. Step 5: Solve for x
    x = 380,083,230.91/20,794.13
  6. Step 6: Final answer
    x = 18,278.39

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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.