Home / 14,267.82-21,390.78-8,720.12

Finding the Fourth Proportional to 14,267.82, 21,390.78 and 8,720.12

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Solution

The fourth proportional to 14,267.82, 21,390.78 and 8,720.12 is: 13,073.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,267.82 : 21,390.78 = 8,720.12 : x
  2. Step 2: Convert to fraction form
    14,267.82/21,390.78 = 8,720.12/x
  3. Step 3: Cross multiply
    14,267.82x = 21,390.78 × 8,720.12
  4. Step 4: Simplify right side
    14,267.82x = 186,530,168.49
  5. Step 5: Solve for x
    x = 186,530,168.49/14,267.82
  6. Step 6: Final answer
    x = 13,073.49

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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.