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Finding the Fourth Proportional to 11,862.67, 17,801.07 and 6,871.45

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Solution

The fourth proportional to 11,862.67, 17,801.07 and 6,871.45 is: 10,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,862.67 : 17,801.07 = 6,871.45 : x
  2. Step 2: Convert to fraction form
    11,862.67/17,801.07 = 6,871.45/x
  3. Step 3: Cross multiply
    11,862.67x = 17,801.07 × 6,871.45
  4. Step 4: Simplify right side
    11,862.67x = 122,319,162.45
  5. Step 5: Solve for x
    x = 122,319,162.45/11,862.67
  6. Step 6: Final answer
    x = 10,311.27

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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.