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Finding the Fourth Proportional to 11,401.90, 17,070.45 and 10,105.90

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Solution

The fourth proportional to 11,401.90, 17,070.45 and 10,105.90 is: 15,130.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,401.90 : 17,070.45 = 10,105.90 : x
  2. Step 2: Convert to fraction form
    11,401.90/17,070.45 = 10,105.90/x
  3. Step 3: Cross multiply
    11,401.90x = 17,070.45 × 10,105.90
  4. Step 4: Simplify right side
    11,401.90x = 172,512,260.66
  5. Step 5: Solve for x
    x = 172,512,260.66/11,401.90
  6. Step 6: Final answer
    x = 15,130.13

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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.