Home / 11,115.61-16,669.36-4,871.32

Finding the Fourth Proportional to 11,115.61, 16,669.36 and 4,871.32

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Solution

The fourth proportional to 11,115.61, 16,669.36 and 4,871.32 is: 7,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.61 : 16,669.36 = 4,871.32 : x
  2. Step 2: Convert to fraction form
    11,115.61/16,669.36 = 4,871.32/x
  3. Step 3: Cross multiply
    11,115.61x = 16,669.36 × 4,871.32
  4. Step 4: Simplify right side
    11,115.61x = 81,201,786.76
  5. Step 5: Solve for x
    x = 81,201,786.76/11,115.61
  6. Step 6: Final answer
    x = 7,305.20

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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.