Home / 11,428.80-17,145.34-5,189.25

Finding the Fourth Proportional to 11,428.80, 17,145.34 and 5,189.25

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Solution

The fourth proportional to 11,428.80, 17,145.34 and 5,189.25 is: 7,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.80 : 17,145.34 = 5,189.25 : x
  2. Step 2: Convert to fraction form
    11,428.80/17,145.34 = 5,189.25/x
  3. Step 3: Cross multiply
    11,428.80x = 17,145.34 × 5,189.25
  4. Step 4: Simplify right side
    11,428.80x = 88,971,455.60
  5. Step 5: Solve for x
    x = 88,971,455.60/11,428.80
  6. Step 6: Final answer
    x = 7,784.85

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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.