Home / 20,845.12-28,767.78-11,892.82

Finding the Fourth Proportional to 20,845.12, 28,767.78 and 11,892.82

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Solution

The fourth proportional to 20,845.12, 28,767.78 and 11,892.82 is: 16,412.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.12 : 28,767.78 = 11,892.82 : x
  2. Step 2: Convert to fraction form
    20,845.12/28,767.78 = 11,892.82/x
  3. Step 3: Cross multiply
    20,845.12x = 28,767.78 × 11,892.82
  4. Step 4: Simplify right side
    20,845.12x = 342,130,029.34
  5. Step 5: Solve for x
    x = 342,130,029.34/20,845.12
  6. Step 6: Final answer
    x = 16,412.96

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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.