Home / 11,886.96-17,820.72-4,487.21

Finding the Fourth Proportional to 11,886.96, 17,820.72 and 4,487.21

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Solution

The fourth proportional to 11,886.96, 17,820.72 and 4,487.21 is: 6,727.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,886.96 : 17,820.72 = 4,487.21 : x
  2. Step 2: Convert to fraction form
    11,886.96/17,820.72 = 4,487.21/x
  3. Step 3: Cross multiply
    11,886.96x = 17,820.72 × 4,487.21
  4. Step 4: Simplify right side
    11,886.96x = 79,965,312.99
  5. Step 5: Solve for x
    x = 79,965,312.99/11,886.96
  6. Step 6: Final answer
    x = 6,727.15

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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.