Home / 11,786.05-17,690.70-8,657.28

Finding the Fourth Proportional to 11,786.05, 17,690.70 and 8,657.28

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Solution

The fourth proportional to 11,786.05, 17,690.70 and 8,657.28 is: 12,994.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,786.05 : 17,690.70 = 8,657.28 : x
  2. Step 2: Convert to fraction form
    11,786.05/17,690.70 = 8,657.28/x
  3. Step 3: Cross multiply
    11,786.05x = 17,690.70 × 8,657.28
  4. Step 4: Simplify right side
    11,786.05x = 153,153,246.34
  5. Step 5: Solve for x
    x = 153,153,246.34/11,786.05
  6. Step 6: Final answer
    x = 12,994.45

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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.