Home / 14,118.32-21,160.38-7,871.70

Finding the Fourth Proportional to 14,118.32, 21,160.38 and 7,871.70

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Solution

The fourth proportional to 14,118.32, 21,160.38 and 7,871.70 is: 11,798.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,118.32 : 21,160.38 = 7,871.70 : x
  2. Step 2: Convert to fraction form
    14,118.32/21,160.38 = 7,871.70/x
  3. Step 3: Cross multiply
    14,118.32x = 21,160.38 × 7,871.70
  4. Step 4: Simplify right side
    14,118.32x = 166,568,163.25
  5. Step 5: Solve for x
    x = 166,568,163.25/14,118.32
  6. Step 6: Final answer
    x = 11,798.02

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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.