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Finding the Fourth Proportional to 11,510.70, 17,270.10 and 11,105.70

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Solution

The fourth proportional to 11,510.70, 17,270.10 and 11,105.70 is: 16,662.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,510.70 : 17,270.10 = 11,105.70 : x
  2. Step 2: Convert to fraction form
    11,510.70/17,270.10 = 11,105.70/x
  3. Step 3: Cross multiply
    11,510.70x = 17,270.10 × 11,105.70
  4. Step 4: Simplify right side
    11,510.70x = 191,796,549.57
  5. Step 5: Solve for x
    x = 191,796,549.57/11,510.70
  6. Step 6: Final answer
    x = 16,662.46

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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.