Home / 14,170.72-21,251.76-6,771.28

Finding the Fourth Proportional to 14,170.72, 21,251.76 and 6,771.28

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Solution

The fourth proportional to 14,170.72, 21,251.76 and 6,771.28 is: 10,154.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,170.72 : 21,251.76 = 6,771.28 : x
  2. Step 2: Convert to fraction form
    14,170.72/21,251.76 = 6,771.28/x
  3. Step 3: Cross multiply
    14,170.72x = 21,251.76 × 6,771.28
  4. Step 4: Simplify right side
    14,170.72x = 143,901,617.45
  5. Step 5: Solve for x
    x = 143,901,617.45/14,170.72
  6. Step 6: Final answer
    x = 10,154.86

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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.