Home / 20,246.32-27,936.96-12,287.20

Finding the Fourth Proportional to 20,246.32, 27,936.96 and 12,287.20

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Solution

The fourth proportional to 20,246.32, 27,936.96 and 12,287.20 is: 16,954.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.32 : 27,936.96 = 12,287.20 : x
  2. Step 2: Convert to fraction form
    20,246.32/27,936.96 = 12,287.20/x
  3. Step 3: Cross multiply
    20,246.32x = 27,936.96 × 12,287.20
  4. Step 4: Simplify right side
    20,246.32x = 343,267,014.91
  5. Step 5: Solve for x
    x = 343,267,014.91/20,246.32
  6. Step 6: Final answer
    x = 16,954.54

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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.