Home / 14,428.20-19,911.04-8,761.44

Finding the Fourth Proportional to 14,428.20, 19,911.04 and 8,761.44

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Solution

The fourth proportional to 14,428.20, 19,911.04 and 8,761.44 is: 12,090.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.20 : 19,911.04 = 8,761.44 : x
  2. Step 2: Convert to fraction form
    14,428.20/19,911.04 = 8,761.44/x
  3. Step 3: Cross multiply
    14,428.20x = 19,911.04 × 8,761.44
  4. Step 4: Simplify right side
    14,428.20x = 174,449,382.30
  5. Step 5: Solve for x
    x = 174,449,382.30/14,428.20
  6. Step 6: Final answer
    x = 12,090.86

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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.