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Finding the Fourth Proportional to 12,871.44, 17,762.22 and 7,565.94

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Solution

The fourth proportional to 12,871.44, 17,762.22 and 7,565.94 is: 10,440.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.44 : 17,762.22 = 7,565.94 : x
  2. Step 2: Convert to fraction form
    12,871.44/17,762.22 = 7,565.94/x
  3. Step 3: Cross multiply
    12,871.44x = 17,762.22 × 7,565.94
  4. Step 4: Simplify right side
    12,871.44x = 134,387,890.79
  5. Step 5: Solve for x
    x = 134,387,890.79/12,871.44
  6. Step 6: Final answer
    x = 10,440.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.