Home / 11,871.90-16,386.30-7,625.88

Finding the Fourth Proportional to 11,871.90, 16,386.30 and 7,625.88

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Solution

The fourth proportional to 11,871.90, 16,386.30 and 7,625.88 is: 10,525.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,871.90 : 16,386.30 = 7,625.88 : x
  2. Step 2: Convert to fraction form
    11,871.90/16,386.30 = 7,625.88/x
  3. Step 3: Cross multiply
    11,871.90x = 16,386.30 × 7,625.88
  4. Step 4: Simplify right side
    11,871.90x = 124,959,957.44
  5. Step 5: Solve for x
    x = 124,959,957.44/11,871.90
  6. Step 6: Final answer
    x = 10,525.69

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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.