Home / 20,168.28-27,828.24-12,211.26

Finding the Fourth Proportional to 20,168.28, 27,828.24 and 12,211.26

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Solution

The fourth proportional to 20,168.28, 27,828.24 and 12,211.26 is: 16,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.28 : 27,828.24 = 12,211.26 : x
  2. Step 2: Convert to fraction form
    20,168.28/27,828.24 = 12,211.26/x
  3. Step 3: Cross multiply
    20,168.28x = 27,828.24 × 12,211.26
  4. Step 4: Simplify right side
    20,168.28x = 339,817,873.98
  5. Step 5: Solve for x
    x = 339,817,873.98/20,168.28
  6. Step 6: Final answer
    x = 16,849.13

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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.