Home / 11,620.80-17,428.68-5,381.10

Finding the Fourth Proportional to 11,620.80, 17,428.68 and 5,381.10

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Solution

The fourth proportional to 11,620.80, 17,428.68 and 5,381.10 is: 8,070.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.80 : 17,428.68 = 5,381.10 : x
  2. Step 2: Convert to fraction form
    11,620.80/17,428.68 = 5,381.10/x
  3. Step 3: Cross multiply
    11,620.80x = 17,428.68 × 5,381.10
  4. Step 4: Simplify right side
    11,620.80x = 93,785,469.95
  5. Step 5: Solve for x
    x = 93,785,469.95/11,620.80
  6. Step 6: Final answer
    x = 8,070.48

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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.