Home / 14,185.26-21,278.10-5,420.64

Finding the Fourth Proportional to 14,185.26, 21,278.10 and 5,420.64

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Solution

The fourth proportional to 14,185.26, 21,278.10 and 5,420.64 is: 8,131.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,185.26 : 21,278.10 = 5,420.64 : x
  2. Step 2: Convert to fraction form
    14,185.26/21,278.10 = 5,420.64/x
  3. Step 3: Cross multiply
    14,185.26x = 21,278.10 × 5,420.64
  4. Step 4: Simplify right side
    14,185.26x = 115,340,919.98
  5. Step 5: Solve for x
    x = 115,340,919.98/14,185.26
  6. Step 6: Final answer
    x = 8,131.04

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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.