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Finding the Fourth Proportional to 11,401.12, 17,101.69 and 9,107.20

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Solution

The fourth proportional to 11,401.12, 17,101.69 and 9,107.20 is: 13,660.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,401.12 : 17,101.69 = 9,107.20 : x
  2. Step 2: Convert to fraction form
    11,401.12/17,101.69 = 9,107.20/x
  3. Step 3: Cross multiply
    11,401.12x = 17,101.69 × 9,107.20
  4. Step 4: Simplify right side
    11,401.12x = 155,748,511.17
  5. Step 5: Solve for x
    x = 155,748,511.17/11,401.12
  6. Step 6: Final answer
    x = 13,660.81

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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.