Home / 20,486.73-30,730.68-11,131.23

Finding the Fourth Proportional to 20,486.73, 30,730.68 and 11,131.23

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Solution

The fourth proportional to 20,486.73, 30,730.68 and 11,131.23 is: 16,697.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.73 : 30,730.68 = 11,131.23 : x
  2. Step 2: Convert to fraction form
    20,486.73/30,730.68 = 11,131.23/x
  3. Step 3: Cross multiply
    20,486.73x = 30,730.68 × 11,131.23
  4. Step 4: Simplify right side
    20,486.73x = 342,070,267.14
  5. Step 5: Solve for x
    x = 342,070,267.14/20,486.73
  6. Step 6: Final answer
    x = 16,697.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.