Home / 11,899.28-17,829.44-7,220.72

Finding the Fourth Proportional to 11,899.28, 17,829.44 and 7,220.72

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Solution

The fourth proportional to 11,899.28, 17,829.44 and 7,220.72 is: 10,819.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,899.28 : 17,829.44 = 7,220.72 : x
  2. Step 2: Convert to fraction form
    11,899.28/17,829.44 = 7,220.72/x
  3. Step 3: Cross multiply
    11,899.28x = 17,829.44 × 7,220.72
  4. Step 4: Simplify right side
    11,899.28x = 128,741,394.00
  5. Step 5: Solve for x
    x = 128,741,394.00/11,899.28
  6. Step 6: Final answer
    x = 10,819.26

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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.