Home / 20,949.64-28,911.85-11,752.07

Finding the Fourth Proportional to 20,949.64, 28,911.85 and 11,752.07

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Solution

The fourth proportional to 20,949.64, 28,911.85 and 11,752.07 is: 16,218.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.64 : 28,911.85 = 11,752.07 : x
  2. Step 2: Convert to fraction form
    20,949.64/28,911.85 = 11,752.07/x
  3. Step 3: Cross multiply
    20,949.64x = 28,911.85 × 11,752.07
  4. Step 4: Simplify right side
    20,949.64x = 339,773,911.09
  5. Step 5: Solve for x
    x = 339,773,911.09/20,949.64
  6. Step 6: Final answer
    x = 16,218.61

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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.