Home / 11,172.89-15,415.82-6,327.69

Finding the Fourth Proportional to 11,172.89, 15,415.82 and 6,327.69

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Solution

The fourth proportional to 11,172.89, 15,415.82 and 6,327.69 is: 8,730.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.89 : 15,415.82 = 6,327.69 : x
  2. Step 2: Convert to fraction form
    11,172.89/15,415.82 = 6,327.69/x
  3. Step 3: Cross multiply
    11,172.89x = 15,415.82 × 6,327.69
  4. Step 4: Simplify right side
    11,172.89x = 97,546,498.42
  5. Step 5: Solve for x
    x = 97,546,498.42/11,172.89
  6. Step 6: Final answer
    x = 8,730.65

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1.5x scale

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.